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James Clerk Maxwell
Scottish physicist (1831–1879)

James Clerk Maxwell (FRS, FRSE) was a Scottish physicist and mathematician who developed the classical theory of electromagnetic radiation, unifying electricity, magnetism, and light through his famous Maxwell's equations. His 1865 work "A Dynamical Theory of the Electromagnetic Field" demonstrated that electric and magnetic fields propagate as waves at the speed of light, predicting phenomena like radio waves. Maxwell contributed to statistical mechanics, derived the Maxwell–Boltzmann distribution, and advanced fields such as control theory. His insights laid foundational work for modern physics, influencing areas including relativity and quantum mechanics, with figures like Einstein praising his legacy.

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Life

Early life, 1831–1839

James Clerk Maxwell was born on 13 June 183127 at 14 India Street, Edinburgh, to John Clerk Maxwell of Middlebie, an advocate, and Frances Cay,2829 daughter of Robert Hodshon Cay and sister of John Cay. (His birthplace now houses a museum operated by the James Clerk Maxwell Foundation.) His father was a man of comfortable means30 of the Clerk family of Penicuik, holders of the baronetcy of Clerk of Penicuik. His father's brother was the 6th baronet.31 He had been born "John Clerk", adding "Maxwell" to his own after he inherited (as an infant in 1793) the Middlebie estate, a Maxwell property in Dumfriesshire.32 James was a first cousin of both the artist Jemima Blackburn33 (the daughter of his father's sister) and the civil engineer William Dyce Cay (the son of his mother's brother). Cay and Maxwell were close friends and Cay acted as his best man when Maxwell married.34

Maxwell's parents met and married when they were well into their thirties;35 his mother was nearly 40 when he was born. They had had one earlier child, a daughter named Elizabeth, who died in infancy.36

When Maxwell was young his family moved to Glenlair, in Kirkcudbrightshire, which his parents had built on the estate which comprised 1,500 acres (610 ha).37 All indications suggest that Maxwell had maintained an unquenchable curiosity from an early age.38 By the age of three, everything that moved, shone, or made a noise drew the question: "what's the go o' that?"39 In a passage added to a letter from his father to his sister-in-law Jane Cay in 1834, his mother described this innate sense of inquisitiveness:

He is a very happy man, and has improved much since the weather got moderate; he has great work with doors, locks, keys, etc., and "show me how it doos" is never out of his mouth. He also investigates the hidden course of streams and bell-wires, the way the water gets from the pond through the wall....40

Education, 1839–1847

Recognising the boy's potential, Maxwell's mother Frances took responsibility for his early education, which in the Victorian era was largely the job of the woman of the house.41 At eight he could recite long passages of John Milton and the whole of the 119th psalm (176 verses). Indeed, his knowledge of scripture was already detailed; he could give chapter and verse for almost any quotation from the Psalms. His mother was taken ill with abdominal cancer and, after an unsuccessful operation, died in December 1839 when he was eight years old. His education was then overseen by his father and his father's sister-in-law Jane, both of whom played pivotal roles in his life.42 His formal schooling began unsuccessfully under the guidance of a 16-year-old hired tutor. Little is known about the young man hired to instruct Maxwell, except that he treated the younger boy harshly, chiding him for being slow and wayward.43 The tutor was dismissed in November 1841. James' father took him to Robert Davidson's demonstration of electric propulsion and magnetic force on 12 February 1842, an experience with profound implications for the boy.44

Maxwell was sent to the prestigious Edinburgh Academy.45 He lodged during term times at the house of his aunt Isabella. During this time his passion for drawing was encouraged by his older cousin Jemima.46 The 10-year-old Maxwell, having been raised in isolation on his father's countryside estate, did not fit in well at school.47 The first year had been full, obliging him to join the second year with classmates a year his senior.48 His mannerisms and Galloway accent struck the other boys as rustic. Having arrived on his first day of school wearing a pair of homemade shoes and a tunic, he earned the unkind nickname of "Daftie".49 He never seemed to resent the epithet, bearing it without complaint for many years.50 Social isolation at the Academy ended when he met Lewis Campbell and Peter Guthrie Tait, two boys of a similar age who were to become notable scholars later in life. They remained lifelong friends.51

Maxwell was fascinated by geometry at an early age, rediscovering the regular polyhedra before he received any formal instruction.52 Despite his winning the school's scripture biography prize in his second year, his academic work remained unnoticed53 until, at the age of 13, he won the school's mathematical medal and first prize for both English and poetry.54

Maxwell's interests ranged far beyond the school syllabus and he did not pay particular attention to examination performance.55 He wrote his first scientific paper at the age of 14. In it, he described a mechanical means of drawing mathematical curves with a piece of twine, and the properties of ellipses, Cartesian ovals, and related curves with more than two foci. The work,5657 of 1846, "On the description of oval curves and those having a plurality of foci"58 was presented to the Royal Society of Edinburgh by James Forbes, a professor of natural philosophy at the University of Edinburgh,5960 because Maxwell was deemed too young to present the work himself.61 The work was not entirely original, since René Descartes had also examined the properties of such multifocal ellipses in the 17th century, but Maxwell had simplified their construction.62

University of Edinburgh, 1847–1850

Maxwell left the Academy in 1847 at age 16 and began attending classes at the University of Edinburgh.63 He had the opportunity to attend the University of Cambridge, but decided, after his first term, to complete the full course of his undergraduate studies at Edinburgh. The academic staff of the university included some highly regarded names; his first-year tutors included Sir William Hamilton, who lectured him on logic and metaphysics, Philip Kelland on mathematics, and James Forbes on natural philosophy.64 He did not find his classes demanding,65 and was, therefore, able to immerse himself in private study during free time at the university and particularly when back home at Glenlair.66 There he would experiment with improvised chemical, electric, and magnetic apparatus; however, his chief concerns regarded the properties of polarised light.67 He constructed shaped blocks of gelatine, subjected them to various stresses, and with a pair of polarising prisms given to him by William Nicol, viewed the coloured fringes that had developed within the jelly.68 Through this practice he discovered photoelasticity, which is a means of determining the stress distribution within physical structures.69

At age 18, Maxwell contributed two papers for the Transactions of the Royal Society of Edinburgh. One of these, "On the Equilibrium of Elastic Solids", laid the foundation for an important discovery later in his life, which was the temporary double refraction produced in viscous liquids by shear stress.70 His other paper was "Rolling Curves" and, just as with the paper "Oval Curves" that he had written at the Edinburgh Academy, he was again considered too young to stand at the rostrum to present it himself. The paper was delivered to the Royal Society by his tutor Kelland instead.71

University of Cambridge, 1850–1856

In October 1850, already an accomplished mathematician, Maxwell left Scotland for the University of Cambridge. He initially attended Peterhouse, but before the end of his first term transferred to Trinity, where he believed it would be easier to obtain a fellowship.72 At Trinity he was elected to the elite secret society known as the Cambridge Apostles.73 Maxwell's intellectual understanding of his Christian faith and of science grew rapidly during his Cambridge years. He joined the "Apostles", an exclusive debating society of the intellectual elite, where through his essays he sought to work out this understanding.

Now my great plan, which was conceived of old, ... is to let nothing be wilfully left unexamined. Nothing is to be holy ground consecrated to Stationary Faith, whether positive or negative. All fallow land is to be ploughed up and a regular system of rotation followed. ... Never hide anything, be it weed or no, nor seem to wish it hidden. ... Again I assert the Right of Trespass on any plot of Holy Ground which any man has set apart. ... Now I am convinced that no one but a Christian can actually purge his land of these holy spots. ... I do not say that no Christians have enclosed places of this sort. Many have a great deal, and every one has some. But there are extensive and important tracts in the territory of the Scoffer, the Pantheist, the Quietist, Formalist, Dogmatist, Sensualist, and the rest, which are openly and solemnly Tabooed. ..."

Christianity—that is, the religion of the Bible—is the only scheme or form of belief which disavows any possessions on such a tenure. Here alone all is free. You may fly to the ends of the world and find no God but the Author of Salvation. You may search the Scriptures and not find a text to stop you in your explorations. ...

The Old Testament and the Mosaic Law and Judaism are commonly supposed to be "Tabooed" by the orthodox. Sceptics pretend to have read them and have found certain witty objections ... which too many of the orthodox unread admit, and shut up the subject as haunted. But a Candle is coming to drive out all Ghosts and Bugbears. Let us follow the light.74

In the summer of his third year, Maxwell spent some time at the Suffolk home of the Rev. C. B. Tayler, the uncle of a classmate, G. W. H. Tayler. The love of God shown by the family impressed Maxwell, particularly after he was nursed back from ill health by the minister and his wife.75

On his return to Cambridge, Maxwell writes to his recent host a chatty and affectionate letter including the following testimony,76

... I have the capacity of being more wicked than any example that man could set me, and ... if I escape, it is only by God's grace helping me to get rid of myself, partially in science, more completely in society, —but not perfectly except by committing myself to God ...

In November 1851, Maxwell studied under William Hopkins, whose success in nurturing mathematical genius had earned him the nickname of "senior wrangler-maker".77

In 1854, Maxwell graduated from Trinity with a degree in mathematics. He scored second highest in the final examination, coming behind Edward Routh and earning himself the title of Second Wrangler. He was later declared equal with Routh in the more exacting ordeal of the Smith's Prize examination.78 Immediately after earning his degree, Maxwell read his paper "On the Transformation of Surfaces by Bending" to the Cambridge Philosophical Society.79 This is one of the few purely mathematical papers he had written, demonstrating his growing stature as a mathematician.80 Maxwell decided to remain at Trinity after graduating and applied for a fellowship, which was a process that he could expect to take a couple of years.81 Buoyed by his success as a research student, he would be free, apart from some tutoring and examining duties, to pursue scientific interests at his own leisure.82

The nature and perception of colour was one such interest which he had begun at the University of Edinburgh while he was a student of Forbes.83 With the coloured spinning tops invented by Forbes, Maxwell was able to demonstrate that white light would result from a mixture of red, green, and blue light.84 His paper "Experiments on Colour" laid out the principles of colour combination and was presented to the Royal Society of Edinburgh in March 1855.85 Maxwell was this time able to deliver it himself.86

Maxwell was made a fellow of Trinity on 10 October 1855, sooner than was the norm,87 and was asked to prepare lectures on hydrostatics and optics and to set examination papers.88 The following February he was urged by Forbes to apply for the newly vacant Chair of Natural Philosophy at Marischal College, Aberdeen.8990 His father assisted him in the task of preparing the necessary references, but died on 2 April at Glenlair before either knew the result of Maxwell's candidacy.91 He accepted the professorship at Aberdeen, leaving Cambridge in November 1856.92

Marischal College, Aberdeen, 1856–1860

The 25-year-old Maxwell was a good 15 years younger than any other professor at Marischal. He engaged himself with his new responsibilities as head of a department, devising the syllabus and preparing lectures.93 He committed himself to lecturing 15 hours a week, including a weekly pro bono lecture to the local working men's college.94 He lived in Aberdeen with his cousin William Dyce Cay, a Scottish civil engineer, during the six months of the academic year and spent the summers at Glenlair, which he had inherited from his father.95

Later, his former student described Maxwell as follows:

In the late 1850s shortly before 9 am any winter’s morning you might well have seen the young James Clerk Maxwell, in his mid to late 20s, a man of middling height, with frame strongly knit, and a certain spring and elasticity in his gait; dressed for comfortable ease rather than elegance; a face expressive at once of sagacity and good humour, but overlaid with a deep shade of thoughtfulness; features boldly put pleasingly marked; eyes dark and glowing; hair and beard perfectly black, and forming a strong contrast to the pallor of his complexion.96

He focused his attention on a problem that had eluded scientists for 200 years: the nature of Saturn's rings. It was unknown how they could remain stable without breaking up, drifting away or crashing into Saturn.97 The problem took on a particular resonance at that time because St John's College, Cambridge, had chosen it as the topic for the 1857 Adams Prize.98 Maxwell devoted two years to studying the problem, proving that a regular solid ring could not be stable, while a fluid ring would be forced by wave action to break up into blobs. Since neither was observed, he concluded that the rings must be composed of numerous small particles he called "brick-bats", each independently orbiting Saturn.99 Maxwell was awarded the £130 Adams Prize in 1859 for his essay "On the stability of the motion of Saturn's rings";100 he was the only entrant to have made enough headway to submit an entry.101 His work was so detailed and convincing that when George Biddell Airy read it he commented, "It is one of the most remarkable applications of mathematics to physics that I have ever seen."102 It was considered the final word on the issue until direct observations by the Voyager flybys of the 1980s confirmed Maxwell's prediction that the rings were composed of particles.103 It is now understood, however, that the rings' particles are not totally stable, being pulled by gravity onto Saturn. The rings are expected to vanish entirely over the next 300 million years.104

In 1857 Maxwell befriended the Reverend Daniel Dewar, who was then the Principal of Marischal.105 Through him Maxwell met Dewar's daughter, Katherine Mary Dewar. They were engaged in February 1858 and married in Aberdeen on 2 June 1858. On the marriage record, Maxwell is listed as Professor of Natural Philosophy in Marischal College, Aberdeen.106 Katherine was seven years Maxwell's senior. Comparatively little is known of her, although it is known that she helped in his lab and worked on experiments in viscosity.107 Maxwell's biographer and friend, Lewis Campbell, adopted an uncharacteristic reticence on the subject of Katherine, though describing their married life as "one of unexampled devotion".108

In 1860 Marischal College merged with the neighbouring King's College to form the University of Aberdeen. There was no room for two professors of Natural Philosophy, so Maxwell, despite his scientific reputation, found himself laid off. He was unsuccessful in applying for Forbes's recently vacated chair at Edinburgh, the post instead going to Tait. Maxwell was granted the Chair of Natural Philosophy at King's College, London, instead.109 After recovering from a near-fatal bout of smallpox in 1860, he moved to London with his wife.110

King's College, London, 1860–1865

Maxwell's time at King's was probably the most productive of his career. He was awarded the Royal Society's Rumford Medal in 1860 for his work on colour and was later elected to the Society in 1861.111 This period of his life would see him display the world's first light-fast colour photograph, further develop his ideas on the viscosity of gases, and propose a system of defining physical quantities—now known as dimensional analysis. Maxwell would often attend lectures at the Royal Institution, where he came into regular contact with Michael Faraday. The relationship between the two men could not be described as being close, because Faraday was 40 years Maxwell's senior and showed signs of senility. They nevertheless maintained a strong respect for each other's talents.112

This time is especially noteworthy for the advances Maxwell made in the fields of electricity and magnetism. He examined the nature of both electric and magnetic fields in his two-part paper "On physical lines of force", which was published in 1861. In it, he provided a conceptual model for electromagnetic induction, consisting of tiny spinning cells of magnetic flux. Two more parts were later added to and published in that same paper in early 1862. In the first additional part, he discussed the nature of electrostatics and displacement current. In the second additional part, he dealt with the rotation of the plane of the polarisation of light in a magnetic field, a phenomenon that had been discovered by Faraday and is now known as the Faraday effect.113

Later years, 1865–1879

In 1865 Maxwell resigned the chair at King's College, London, and returned to Glenlair with Katherine. In his paper "On governors" (1868) he mathematically described the behaviour of governors—devices that control the speed of steam engines—thereby establishing the theoretical basis of control engineering.114 In his paper "On reciprocal figures, frames and diagrams of forces" (1870) he discussed the rigidity of various designs of lattice.115116 He wrote the textbook Theory of Heat (1871) and the treatise Matter and Motion (1876). Maxwell was also the first to make explicit use of dimensional analysis, in 1871.117

Maxwell has been credited as being the first to grasp the concept of chaos, as he acknowledged the significance of systems that exhibit "sensitive dependence on initial conditions."118 He was also the first to emphasize the "butterfly effect" in the 1870s in two discussions.119120

In 1871 he returned to Cambridge to become the first Cavendish Professor of Physics.121 Maxwell was put in charge of the development of the Cavendish Laboratory, supervising every step in the progress of the building and of the purchase of the collection of apparatus.122 One of Maxwell's last great contributions to science was the editing (with copious original notes) of the research of Henry Cavendish, from which it appeared that Cavendish researched, amongst other things, such questions as the density of the Earth and the composition of water.123 He was elected as a member to the American Philosophical Society in 1876.124

Death

In April 1879 Maxwell began to have difficulty in swallowing, the first symptom of his fatal illness.125

Maxwell died in Cambridge of abdominal cancer on 5 November 1879 at the age of 48.126 His mother had died at the same age of the same type of cancer.127 The minister who regularly visited him in his last weeks was astonished at his lucidity and the immense power and scope of his memory, but comments more particularly,

... his illness drew out the whole heart and soul and spirit of the man: his firm and undoubting faith in the Incarnation and all its results; in the full sufficiency of the Atonement; in the work of the Holy Spirit. He had gauged and fathomed all the schemes and systems of philosophy, and had found them utterly empty and unsatisfying—"unworkable" was his own word about them—and he turned with simple faith to the Gospel of the Saviour.

As death approached Maxwell told a Cambridge colleague,128

I have been thinking how very gently I have always been dealt with. I have never had a violent shove all my life. The only desire which I can have is like David to serve my own generation by the will of God, and then fall asleep.

Maxwell is buried at Parton Kirk, near Castle Douglas in Galloway close to where he grew up.129 The extended biography The Life of James Clerk Maxwell, by his former schoolfellow and lifelong friend Professor Lewis Campbell, was published in 1882.130131 His collected works were issued in two volumes by the Cambridge University Press in 1890.132

The executors of Maxwell's estate were his physician George Edward Paget, G. G. Stokes, and Colin Mackenzie, who was Maxwell's cousin. Overburdened with work, Stokes passed Maxwell's papers to William Garnett, who had effective custody of the papers until about 1884.133

There is a memorial inscription to him near the choir screen at Westminster Abbey.134

Personal life

As a great lover of Scottish poetry, Maxwell memorised poems and wrote his own.135 The best known is Rigid Body Sings, closely based on "Comin' Through the Rye" by Robert Burns, which he apparently used to sing while accompanying himself on a guitar. It has the opening lines136

Gin a body meet a body Flyin' through the air. Gin a body hit a body, Will it fly? And where?

A collection of his poems was published by his friend Lewis Campbell in 1882.137

Descriptions of Maxwell remark upon his remarkable intellectual qualities being matched by social awkwardness.138

Maxwell wrote the following aphorism for his own conduct as a scientist:

He that would enjoy life and act with freedom must have the work of the day continually before his eyes. Not yesterday's work, lest he fall into despair, not to-morrow's, lest he become a visionary—not that which ends with the day, which is a worldly work, nor yet that only which remains to eternity, for by it he cannot shape his action. Happy is the man who can recognize in the work of to-day a connected portion of the work of life, and an embodiment of the work of eternity. The foundations of his confidence are unchangeable, for he has been made a partaker of Infinity. He strenuously works out his daily enterprises, because the present is given him for a possession.139

Maxwell was an evangelical Presbyterian and in his later years became an Elder of the Church of Scotland.140 Maxwell's religious beliefs and related activities have been the focus of a number of papers.141142143144 Attending both Church of Scotland (his father's denomination) and Episcopalian (his mother's denomination) services as a child, Maxwell underwent an evangelical conversion in April 1853. One facet of this conversion may have aligned him with an antipositivist position.145

Scientific legacy

Recognition

In a survey of the 100 most prominent physicists conducted by Physics World—Maxwell was voted the third greatest physicist of all time, behind only Newton and Einstein.146 Another survey of rank-and-file physicists by PhysicsWeb voted him third.147

Electromagnetism

Main articles: Maxwell's equations and Electromagnetism

Maxwell had studied and commented on electricity and magnetism as early as 1855 when his paper "On Faraday's lines of force" was read to the Cambridge Philosophical Society.148 The paper presented a simplified model of Faraday's work and how electricity and magnetism are related. He reduced all of the current knowledge into a linked set of differential equations with 20 equations in 20 variables. This work was later published as "On Physical Lines of Force" in March 1861.149

Around 1862, while lecturing at King's College, Maxwell calculated that the speed of propagation of an electromagnetic field is approximately that of the speed of light. He considered this to be more than just a coincidence, commenting, "We can scarcely avoid the conclusion that light consists in the transverse undulations of the same medium which is the cause of electric and magnetic phenomena.150

Working on the problem further, Maxwell showed that the equations predict the existence of waves of oscillating electric and magnetic fields that travel through empty space at a speed that could be predicted from simple electrical experiments; using the data available at the time, Maxwell obtained a velocity of 310,740,000 metres per second (1.0195×109 ft/s).151 In his 1865 paper "A Dynamical Theory of the Electromagnetic Field", Maxwell wrote, "The agreement of the results seems to show that light and magnetism are affections of the same substance, and that light is an electromagnetic disturbance propagated through the field according to electromagnetic laws".152

His famous twenty equations, in their modern form of partial differential equations, first appeared in fully developed form in his textbook A Treatise on Electricity and Magnetism in 1873.153 Most of this work was done by Maxwell at Glenlair during the period between holding his London post and his taking up the Cavendish chair.154 Oliver Heaviside reduced the complexity of Maxwell's theory down to four partial differential equations,155 known now collectively as Maxwell's Laws or Maxwell's equations. Although potentials became much less popular in the nineteenth century,156 the use of scalar and vector potentials is now standard in the solution of Maxwell's equations.157 His work achieved the second great unification in physics.158

As Barrett and Grimes (1995) describe:159

Maxwell expressed electromagnetism in the algebra of quaternions and made the electromagnetic potential the centerpiece of his theory. In 1881 Heaviside replaced the electromagnetic potential field by force fields as the centerpiece of electromagnetic theory. According to Heaviside, the electromagnetic potential field was arbitrary and needed to be "assassinated". (sic) A few years later there was a debate between Heaviside and [Peter Guthrie] Tate (sic) about the relative merits of vector analysis and quaternions. The result was the realization that there was no need for the greater physical insights provided by quaternions if the theory was purely local, and vector analysis became commonplace.

Maxwell was proved correct, and his quantitative connection between light and electromagnetism is considered one of the great accomplishments of 19th-century mathematical physics.160

Maxwell also introduced the concept of the electromagnetic field in comparison to force lines that Faraday described.161 By understanding the propagation of electromagnetism as a field emitted by active particles, Maxwell could advance his work on light. At that time, Maxwell believed that the propagation of light required a medium for the waves, dubbed the luminiferous aether.162 Over time, the existence of such a medium, permeating all space and yet apparently undetectable by mechanical means, proved impossible to reconcile with experiments such as the Michelson–Morley experiment.163 Moreover, it seemed to require an absolute frame of reference in which the equations were valid, with the distasteful result that the equations changed form for a moving observer. These difficulties inspired Albert Einstein to formulate the theory of special relativity; in the process, Einstein dispensed with the requirement of a stationary luminiferous aether.164

Einstein acknowledged the groundbreaking work of Maxwell, stating that:165

One scientific epoch ended and another began with James Clerk Maxwell.

He also acknowledged the influence that his work had on his relativity theory:166

The special theory of relativity owes its origins to Maxwell's equations of the electromagnetic field.

Colour vision

Along with most physicists of the time, Maxwell had a strong interest in psychology. Following in the steps of Isaac Newton and Thomas Young, he was particularly interested in the study of colour vision. From 1855 to 1872, Maxwell published at intervals a series of investigations concerning the perception of colour, colour-blindness, and colour theory, and was awarded the Rumford Medal for "On the Theory of Colour Vision".167

Isaac Newton had demonstrated, using prisms, that white light, such as sunlight, is composed of a number of monochromatic components which could then be recombined into white light.168 Newton also showed that an orange paint made of yellow and red could look exactly like a monochromatic orange light, although being composed of two monochromatic yellow and red lights. Hence the paradox that puzzled physicists of the time: two complex lights (composed of more than one monochromatic light) could look alike but be physically different, called metameres. Thomas Young later proposed that this paradox could be explained by colours being perceived through a limited number of channels in the eyes, which he proposed to be threefold,169 the trichromatic colour theory. Maxwell used the recently developed linear algebra to prove Young's theory. Any monochromatic light stimulating three receptors should be able to be equally stimulated by a set of three different monochromatic lights (in fact, by any set of three different lights). He demonstrated that to be the case,170 inventing colour matching experiments and Colourimetry.

Maxwell was also interested in applying his theory of colour perception, namely in colour photography. Stemming directly from his psychological work on colour perception: if a sum of any three lights could reproduce any perceivable colour, then colour photographs could be produced with a set of three coloured filters. In the course of his 1855 paper, Maxwell proposed that, if three black-and-white photographs of a scene were taken through red, green, and blue filters, and transparent prints of the images were projected onto a screen using three projectors equipped with similar filters, when superimposed on the screen the result would be perceived by the human eye as a complete reproduction of all the colours in the scene.171

During an 1861 Royal Institution lecture on colour theory, Maxwell presented the world's first demonstration of colour photography by this principle of three-colour analysis and synthesis. Thomas Sutton, inventor of the single-lens reflex camera, took the picture. He photographed a tartan ribbon three times, through red, green, and blue filters, also making a fourth photograph through a yellow filter, which, according to Maxwell's account, was not used in the demonstration. Because Sutton's photographic plates were insensitive to red and barely sensitive to green, the results of this pioneering experiment were far from perfect. It was remarked in the published account of the lecture that "if the red and green images had been as fully photographed as the blue", it "would have been a truly-coloured image of the riband. By finding photographic materials more sensitive to the less refrangible rays, the representation of the colours of objects might be greatly improved."172173174 Researchers in 1961 concluded that the seemingly impossible partial success of the red-filtered exposure was due to ultraviolet light, which is strongly reflected by some red dyes, not entirely blocked by the red filter used, and within the range of sensitivity of the wet collodion process Sutton employed.175

Kinetic theory and thermodynamics

Main article: Maxwell–Boltzmann distribution

Maxwell also investigated the kinetic theory of gases. Originating with Daniel Bernoulli, this theory was advanced by the successive labours of John Herapath, John James Waterston, James Joule, and particularly Rudolf Clausius, to such an extent as to put its general accuracy beyond a doubt; but it received enormous development from Maxwell, who in this field appeared as an experimenter (on the laws of gaseous friction) as well as a mathematician.176

Between 1859 and 1866, he developed the theory of the distributions of velocities in particles of a gas, work later generalised by Ludwig Boltzmann.177178 The formula, called the Maxwell–Boltzmann distribution, gives the fraction of gas molecules moving at a specified velocity at any given temperature. In the kinetic theory, temperatures and heat involve only molecular movement. This approach generalised the previously established laws of thermodynamics and explained existing observations and experiments in a better way than had been achieved previously. His work on thermodynamics led him to devise the thought experiment that came to be known as Maxwell's demon, where the second law of thermodynamics is violated by an imaginary being capable of sorting particles by energy.179

In 1871, he established Maxwell's thermodynamic relations, which are statements of equality among the second derivatives of the thermodynamic potentials with respect to different thermodynamic variables. In 1874, he constructed a plaster thermodynamic visualisation as a way of exploring phase transitions, based on the American scientist Josiah Willard Gibbs's graphical thermodynamics papers.180181

In his 1867 paper On the Dynamical Theory of Gases he introduced the Maxwell model for describing the behavior of a viscoelastic material and originated the Maxwell-Cattaneo equation for describing the transport of heat in a medium.182

Peter Guthrie Tait called Maxwell the "leading molecular scientist" of his time.183 Another person added after Maxwell's death that "only one man lived who could understand Gibbs's papers. That was Maxwell, and now he is dead."184

Control theory

Main article: Control theory

Maxwell published the paper "On governors" in the Proceedings of the Royal Society, vol. 16 (1867–1868).185 This paper is considered a central paper of the early days of control theory.186 Here "governors" refers to the governor or the centrifugal governor used to regulate steam engines.

Honours

Main article: List of things named after James Clerk Maxwell

Publications

Notes

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References

  1. "Topology and Scottish mathematical physics". University of St Andrews. Archived from the original on 12 September 2013. Retrieved 9 September 2013. http://www-history.mcs.st-and.ac.uk/HistTopics/Knots_and_physics.html ↩

  2. Nahin, P.J. (1992). "Maxwell's grand unification". IEEE Spectrum. 29 (3): 45. doi:10.1109/6.123329. S2CID 28991366. /wiki/Doi_(identifier) ↩

  3. Keithley, Joseph F. (1999). The Story of Electrical and Magnetic Measurements: From 500 BC to the 1940s. New York: IEEE Press. p. 180. ISBN 978-0-7803-1193-0. 978-0-7803-1193-0 ↩

  4. Mahon 2003, pp. 82–83, 164. - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  5. Maxwell, James Clerk (1865). "A dynamical theory of the electromagnetic field" (PDF). Philosophical Transactions of the Royal Society of London. 155: 459–512. Bibcode:1865RSPT..155..459M. doi:10.1098/rstl.1865.0008. S2CID 186207827. Archived (PDF) from the original on 28 July 2011. (This article accompanied an 8 December 1864 presentation by Maxwell to the Royal Society. His statement that "light and magnetism are affections of the same substance" is at page 499.) https://upload.wikimedia.org/wikipedia/commons/1/19/A_Dynamical_Theory_of_the_Electromagnetic_Field.pdf ↩

  6. Longair, Malcolm (13 April 2015). "'…a paper …I hold to be great guns': a commentary on Maxwell (1865) 'A dynamical theory of the electromagnetic field'". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 373 (2039): 20140473. Bibcode:2015RSPTA.37340473L. doi:10.1098/rsta.2014.0473. ISSN 1364-503X. PMC 4360095. PMID 25750155. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4360095 ↩

  7. Sarkar, Tapan K.; Salazar-Palma, Magdalena; Sengupta, Dipak L. (2010). "James Clerk Maxwell: The Founder of Electrical Engineering". 2010 Second Region 8 IEEE Conference on the History of Communications. pp. 1–7. doi:10.1109/HISTELCON.2010.5735323. ISBN 978-1-4244-7450-9. S2CID 42295662 – via IEEE. 978-1-4244-7450-9 ↩

  8. Johnson, Kevin. "Kinetic Theory of Gases". Maths History. Retrieved 7 November 2023. https://mathshistory.st-andrews.ac.uk/Projects/Johnson/chapter-6/ ↩

  9. Sarkar, Tapan K.; Salazar-Palma, Magdalena; Sengupta, Dipak L. (2010). "James Clerk Maxwell: The Founder of Electrical Engineering". 2010 Second Region 8 IEEE Conference on the History of Communications. pp. 1–7. doi:10.1109/HISTELCON.2010.5735323. ISBN 978-1-4244-7450-9. S2CID 42295662 – via IEEE. 978-1-4244-7450-9 ↩

  10. Taylor, Barry N., ed. (2001). The International System of Units (SI) (PDF) (7th ed.). National Institute of Standards and Technology. p. 2. https://physics.nist.gov/cuu/pdf/sp330.pdf ↩

  11. Everett, Francis (1 December 2006). "James Clerk Maxwell: a force for physics". Physics World. Retrieved 7 November 2023. https://physicsworld.com/a/james-clerk-maxwell-a-force-for-physics/ ↩

  12. Bramwell, Steven T. (2 August 2017). "The invention of dimension". Nature Physics. 13 (8): 820. Bibcode:2017NatPh..13..820B. doi:10.1038/nphys4229. ISSN 1745-2481. S2CID 125401842. https://www.nature.com/articles/nphys4229 ↩

  13. Hunt, Brian R.; Yorke, James A. (1993). "Maxwell on Chaos" (PDF). Nonlinear Science Today. 3 (1). https://yorke.umd.edu/Yorke_papers_most_cited_and_post2000/1993_04_Hunt_%20Nonlin-Science-Today%20_Maxwell%20on%20Chaos.PDF ↩

  14. Everett, Francis (1 December 2006). "James Clerk Maxwell: a force for physics". Physics World. Retrieved 7 November 2023. https://physicsworld.com/a/james-clerk-maxwell-a-force-for-physics/ ↩

  15. Bittanti, Sergio (2 December 2015). "James Clerk Maxwell, a precursor of system identification and control science". International Journal of Control. 88 (12): 2427–2432. Bibcode:2015IJC....88.2427B. doi:10.1080/00207179.2015.1098783. hdl:11311/983132. ISSN 0020-7179. http://www.tandfonline.com/doi/full/10.1080/00207179.2015.1098783 ↩

  16. Mayr, Otto (1971). "Maxwell and the Origins of Cybernetics". Isis. 62 (4): 425–444. doi:10.1086/350788. ISSN 0021-1753. JSTOR 229816. https://www.jstor.org/stable/229816 ↩

  17. Mahon 2003, pp. 2–3, 140. - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  18. Hemmo, Meir; Shenker, Orly (7 March 2016). Maxwell's Demon. Oxford University Press. doi:10.1093/oxfordhb/9780199935314.013.63. https://academic.oup.com/edited-volume/42642/chapter/358144458 ↩

  19. Christov, Ivan C.; Jordan, Pedro M. (21 September 2015). "Maxwell's "other" equations". royalsociety.org. Retrieved 2 March 2025. https://royalsociety.org/blog/2015/09/maxwells-other-equations/ ↩

  20. Everett, Francis (1 December 2006). "James Clerk Maxwell: a force for physics". Physics World. Retrieved 7 November 2023. https://physicsworld.com/a/james-clerk-maxwell-a-force-for-physics/ ↩

  21. Mahon 2003, p. 2. - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  22. Qadir, Asghar; Mason, D. P. (2015). "Sesquicentennial of the presentation by James Clerk Maxwell of his paper "A Dynamical Theory of the Electromagnetic Field" to the Royal Society of London". International Journal of Modern Physics: Conference Series. 38: 1560070. Bibcode:2015IJMPS..3860070Q. doi:10.1142/S2010194515600708. ISSN 2010-1945. https://www.worldscientific.com/doi/abs/10.1142/S2010194515600708 ↩

  23. Tolstoy, Ivan (1981). James Clerk Maxwell : a biography. Chicago: University of Chicago Press. p. 2. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  24. McFall, Patrick (23 April 2006). "Brainy young James wasn't so daft after all". The Sunday Post. maxwellyear2006.org. Archived from the original on 20 June 2013. Retrieved 29 March 2013. http://www.maxwellyear2006.org/html/press_coverage.html#Press5 ↩

  25. Mary Shine Thompson, 2009, The Fire l' the Flint, p. 103; Four Courts ↩

  26. Siegfried, Tom (2006). A Beautiful Math: John Nash, Game Theory, and the Modern Quest for a Code of Nature. Joseph Henry Press. p. 135. ISBN 978-0309101929. 978-0309101929 ↩

  27. "Early day motion 2048". UK Parliament. Archived from the original on 30 May 2013. Retrieved 22 April 2013. http://www.parliament.uk/edm/2005-06/2048 ↩

  28. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  29. Waterston & Macmillan Shearer 2006, p. 633 - Waterston, Charles D; Macmillan Shearer, A. (July 2006). Former Fellows of the Royal Society of Edinburgh 1783–2002: Biographical Index (PDF). Vol. II. Edinburgh: The Royal Society of Edinburgh. ISBN 978-0-902198-84-5. http://www.rse.org.uk/cms/files/fellows/biographical_index/fells_indexp2.pdf ↩

  30. Laidler, Keith James (2002). Energy and the Unexpected. Oxford University Press. p. 49. ISBN 978-0-19-852516-5. Archived from the original on 24 April 2016. 978-0-19-852516-5 ↩

  31. Maxwell, James Clerk (2011). "Preface". The Scientific Papers of James Clerk Maxwell. Cambridge University Press. ISBN 978-1-108-01225-6. Archived from the original on 16 December 2020. Retrieved 5 September 2020. 978-1-108-01225-6 ↩

  32. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  33. "Jemima Blackburn". Gazetteer for Scotland. Archived from the original on 12 November 2013. Retrieved 27 August 2013. http://www.scottish-places.info/scotgaz/people/famousfirst2374.html ↩

  34. "William Dyce Cay". scottisharchitects.org.uk. Archived from the original on 25 September 2015. http://www.scottisharchitects.org.uk/architect_full.php?id=404238 ↩

  35. Tolstoy, Ivan (1981). James Clerk Maxwell: a biography. Chicago: University of Chicago Press. p. 11. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  36. Campbell 1882, p. 1 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  37. Mahon 2003, pp. 186–187 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  38. Tolstoy, Ivan (1981). James Clerk Maxwell: a biography. Chicago: University of Chicago Press. p. 13. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  39. Mahon 2003, p. 3 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  40. Campbell 1882, p. 27 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  41. Tolstoy, Ivan (1981). James Clerk Maxwell : a biography. Chicago: University of Chicago Press. pp. 15–16. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  42. Tolstoy, Ivan (1981). James Clerk Maxwell : a biography. Chicago: University of Chicago Press. pp. 15–16. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  43. Tolstoy, Ivan (1981). James Clerk Maxwell : a biography. Chicago: University of Chicago Press. pp. 15–16. ISBN 0-226-80785-1. OCLC 8688302. 0-226-80785-1 ↩

  44. Anthony F. Anderson (11 June 1981) Forces of Inspiration Archived 2 December 2021 at the Wayback Machine, The New Scientist, pages 712,3 via Google Books https://books.google.com/books?id=ONm4--sv5mcC&pg=PA712 ↩

  45. Campbell 1882, pp. 19–21 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  46. Mahon 2003, pp. 12–14 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  47. Mahon 2003, p. 10 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  48. Mahon 2003, p. 10 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  49. Mahon 2003, p. 4 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  50. Campbell 1882, pp. 23–24 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  51. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  52. Mahon 2003, pp. 12–14 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  53. Mahon 2003, pp. 12–14 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  54. Campbell 1882, p. 43 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  55. Campbell 1882, p. 43 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  56. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  57. Gardner 2007, pp. 46–49 - Gardner, Martin (2007). The Last Recreations: Hydras, Eggs, and Other Mathematical Mystifications. Springer-Verlag. ISBN 978-0-387-25827-0. https://archive.org/details/lastrecreationsh00gard_0 ↩

  58. "Key dates in the life of James Clerk Maxwell". James Clerk Maxwell Foundation. www.clerkmaxwellfoundation.org/. Archived from the original on 5 March 2020. Retrieved 8 December 2023. http://www.clerkmaxwellfoundation.org/html/key_facts_about_maxwell.html ↩

  59. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  60. Gardner 2007, pp. 46–49 - Gardner, Martin (2007). The Last Recreations: Hydras, Eggs, and Other Mathematical Mystifications. Springer-Verlag. ISBN 978-0-387-25827-0. https://archive.org/details/lastrecreationsh00gard_0 ↩

  61. Mahon 2003, p. 16 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  62. Mahon 2003, p. 16 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  63. Harman 2004, p. 662 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  64. Harman 2004, p. 506 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  65. Tolstoy 1982, p. 46 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  66. Campbell 1882, p. 64 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  67. Mahon 2003, pp. 30–31 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  68. Timoshenko 1983, p. 58 - Timoshenko, Stephen (1983). History of Strength of Materials. Courier Dover. ISBN 978-0-486-61187-7. ↩

  69. Russo 1996, p. 73 - Russo, Remigio (1996). Mathematical Problems in Elasticity. World Scientific. ISBN 981-02-2576-8. https://books.google.com/books?id=qe05dx_hpVsC ↩

  70. Timoshenko 1983, pp. 268–278 - Timoshenko, Stephen (1983). History of Strength of Materials. Courier Dover. ISBN 978-0-486-61187-7. ↩

  71. Glazebrook 1896, p. 23 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  72. Glazebrook 1896, p. 28 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  73. Glazebrook 1896, p. 30 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  74. "James Clerk Maxwell and the Christian Proposition". MIT IAP Seminar. Archived from the original on 25 October 2014. Retrieved 13 October 2014. http://silas.psfc.mit.edu/maxwell ↩

  75. Campbell 1882, pp. 169–170 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  76. "James Clerk Maxwell and the Christian Proposition". MIT IAP Seminar. Archived from the original on 25 October 2014. Retrieved 13 October 2014. http://silas.psfc.mit.edu/maxwell ↩

  77. Warwick 2003, pp. 84–85 - Warwick, Andrew (2003). Masters of Theory: Cambridge and the Rise of Mathematical Physics. University of Chicago Press. ISBN 0-226-87374-9. https://archive.org/details/mastersoftheoryc0000warw ↩

  78. Tolstoy 1982, p. 62 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  79. Harman 1998, p. 3 - Harman, Peter M. (1998). The Natural Philosophy of James Clerk Maxwell. Cambridge University Press. ISBN 0-521-00585-X. https://books.google.com/books?id=v4xjVtszqssC ↩

  80. Tolstoy 1982, p. 61 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  81. Mahon 2003, pp. 47–48 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  82. Mahon 2003, pp. 47–48 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  83. Mahon 2003, p. 51 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  84. Mahon 2003, p. 51 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  85. Tolstoy 1982, pp. 64–65. The full title of Maxwell's paper was "Experiments on colour, as perceived by the eye, with remarks on colour-blindness". - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  86. Tolstoy 1982, pp. 64–65. The full title of Maxwell's paper was "Experiments on colour, as perceived by the eye, with remarks on colour-blindness". - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  87. Tolstoy 1982, pp. 64–65. The full title of Maxwell's paper was "Experiments on colour, as perceived by the eye, with remarks on colour-blindness". - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  88. Glazebrook 1896, pp. 43–46 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  89. "James Clerk Maxwell". The Science Museum, London. Archived from the original on 31 May 2013. Retrieved 22 April 2013. https://web.archive.org/web/20130531131420/http://www.sciencemuseum.org.uk/onlinestuff/People/James%20Clerk%20Maxwell%20183179.aspx ↩

  90. Campbell 1882, p. 126 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  91. Campbell 1882, p. 126 - Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  92. Glazebrook 1896, pp. 43–46 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  93. Mahon 2003, pp. 69–71 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  94. Mahon 2003, pp. 69–71 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  95. Maxwell, James Clerk (2011). "Preface". The Scientific Papers of James Clerk Maxwell. Cambridge University Press. ISBN 978-1-108-01225-6. Archived from the original on 16 December 2020. Retrieved 5 September 2020. 978-1-108-01225-6 ↩

  96. Reid, John S. "James Clerk Maxwell plaque – 129 Union Street". The Scientific Tourist: Aberdeen. https://studylib.net/doc/18046724/james-clerk-maxwell-plaque-%E2%80%93-129-union-street ↩

  97. Harman 1998, pp. 48–53 - Harman, Peter M. (1998). The Natural Philosophy of James Clerk Maxwell. Cambridge University Press. ISBN 0-521-00585-X. https://books.google.com/books?id=v4xjVtszqssC ↩

  98. Harman 2004, p. 508 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  99. Harman 2004, p. 508 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  100. "On the stability of the motion of Saturn's rings". Archived from the original on 16 June 2015. Retrieved 24 March 2014. https://archive.org/details/onstabilityofmot00maxw ↩

  101. Mahon 2003, p. 75 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  102. O'Connor, J.J.; Robertson, E.F. (November 1997). "James Clerk Maxwell". School of Mathematical and Computational Sciences University of St Andrews. Archived from the original on 5 November 2021. Retrieved 19 June 2021. https://mathshistory.st-andrews.ac.uk/Biographies/Maxwell/ ↩

  103. "James Clerk Maxwell (1831–1879)". National Library of Scotland. Archived from the original on 6 October 2013. Retrieved 27 August 2013. http://digital.nls.uk/scientists/biographies/james-clerk-maxwell/index.html ↩

  104. "Goodbye to Saturn's Rings". EarthSky. 19 December 2018. Archived from the original on 21 February 2019. Retrieved 20 February 2019. https://earthsky.org/space/saturns-rings-disappearing-ring-rain-video ↩

  105. "Very Rev. Daniel Dewar DD (I20494)". Stanford University. Retrieved 27 August 2013. http://www.stanford.edu/group/auden/cgi-bin/auden/individual.php?pid=I20494&ged=auden-bicknell.ged ↩

  106. James Clerk Maxwell and Katherine Mary Dewar marriage certificate, Family History Library film #280176, district 168/2 (Old Machar, Aberdeen), page 83, certificate No. 65. ↩

  107. Maxwell 2001, p. 351 - Maxwell, James Clerk (2001). Theory of Heat (9th ed.). Courier Dover Publications. ISBN 978-0-486-41735-6. Archived from the original on 6 June 2020. Retrieved 5 September 2020. https://books.google.com/books?id=qE50pbHfQtgC ↩

  108. Tolstoy 1982, pp. 88–91 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  109. Glazebrook 1896, p. 54 - Glazebrook, R.T. (1896). James Clerk Maxwell and Modern Physics. 811951455. OCLC 811951455. https://archive.org/stream/jamesclerkmaxwel00glaziala#page/n7/mode/2up ↩

  110. Tolstoy 1982, p. 98 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  111. Tolstoy 1982, p. 103 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  112. Tolstoy 1982, pp. 100–101 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  113. Mahon 2003, p. 109 - Mahon, Basil (2003). The Man Who Changed Everything – the Life of James Clerk Maxwell. Wiley. ISBN 0-470-86171-1. https://books.google.com/books?id=mGo_jtHwL0sC ↩

  114. Maxwell, J.C. (1868), "On governors", from the proceedings of the Royal Society, No. 100 ↩

  115. Maxwell, J. Clerk (2013). "I.—On Reciprocal Figures, Frames, and Diagrams of Forces". Transactions of the Royal Society of Edinburgh. 26: 1–40. doi:10.1017/S0080456800026351. S2CID 123687168. Archived from the original on 12 May 2014. http://digital.nls.uk/scientists/pageturner.cfm?id=74629052 ↩

  116. Crapo, Henry (1979). "Structural rigidity" (PDF). Structural Topology (1): 26–45. Archived (PDF) from the original on 23 October 2014. http://www.iri.upc.edu/people/ros/StructuralTopology/ST1/st1-06-a3-ocr.pdf ↩

  117. Lestienne, Rémy (1998). The Creative Power of Chance. University of Illinois Press. pp. 20–21. ISBN 978-0-252-06686-3. 978-0-252-06686-3 ↩

  118. Hunt, Brian R.; Yorke, James A. (1993). "Maxwell on Chaos" (PDF). Nonlinear Science Today. 3 (1). https://yorke.umd.edu/Yorke_papers_most_cited_and_post2000/1993_04_Hunt_%20Nonlin-Science-Today%20_Maxwell%20on%20Chaos.PDF ↩

  119. Everett, Francis (1 December 2006). "James Clerk Maxwell: a force for physics". Physics World. Retrieved 7 November 2023. https://physicsworld.com/a/james-clerk-maxwell-a-force-for-physics/ ↩

  120. Gardini, Laura; Grebogi, Celso; Lenci, Stefano (1 October 2020). "Chaos theory and applications: a retrospective on lessons learned and missed or new opportunities". Nonlinear Dynamics. 102 (2): 643–644. Bibcode:2020NonDy.102..643G. doi:10.1007/s11071-020-05903-0. hdl:2164/17003. ISSN 1573-269X. https://doi.org/10.1007%2Fs11071-020-05903-0 ↩

  121. "The Cavendish Professorship of Physics". University of Cambridge, Department of Physics. Archived from the original on 3 July 2013. Retrieved 27 March 2013. http://www.phy.cam.ac.uk/history/cavprof.php ↩

  122. Moralee, Dennis. "The Old Cavendish – "The First Ten Years"". University of Cambridge Department of Physics. Archived from the original on 15 September 2013. Retrieved 30 June 2013. https://web.archive.org/web/20130915013523/http://www.phy.cam.ac.uk/history/old_maxwell.php ↩

  123. Jones, Roger (2009). What's Who?: A Dictionary of Things Named After People and the People They are Named After. Troubador Publishing. p. 40. ISBN 978-1-84876-047-9. Archived from the original on 20 May 2016. 978-1-84876-047-9 ↩

  124. "APS Member History". search.amphilsoc.org. Archived from the original on 5 May 2021. Retrieved 5 May 2021. https://search.amphilsoc.org/memhist/search?creator=&title=&subject=&subdiv=&mem=&year=1875&year-max=&dead=&keyword=&smode=advanced ↩

  125. Campbell, Lewis (1882). The life of James Clerk Maxwell. London: Macmillan. p. 411. Archived from the original on 21 March 2020. Retrieved 1 February 2020. https://babel.hathitrust.org/cgi/pt?id=mdp.39015059009939&view=1up&seq=453 ↩

  126. Harman 2004, p. 662 - Harman, Peter M. (2004). "Maxwell, James". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/5624. https://doi.org/10.1093%2Fref%3Aodnb%2F5624 ↩

  127. "James Clerk Maxwell Foundation" (PDF). Archived (PDF) from the original on 27 August 2013. Retrieved 30 June 2013. http://www.clerkmaxwellfoundation.org/JCMF_brochure_v2.pdf ↩

  128. "James Clerk Maxwell and the Christian Proposition". MIT IAP Seminar. Archived from the original on 25 October 2014. Retrieved 13 October 2014. http://silas.psfc.mit.edu/maxwell ↩

  129. "Parton & Sam Callander". James Clerk Maxwell Foundation. Archived from the original on 2 June 2013. Retrieved 30 June 2013. http://www.clerkmaxwellfoundation.org/html/parton.html ↩

  130. Campbell, Lewis (2010). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science. Cambridge University Press. ISBN 978-1-108-01370-3. Archived from the original on 29 May 2016. 978-1-108-01370-3 ↩

  131. Campbell, Lewis (1882). The Life of James Clerk Maxwell: With a Selection from His Correspondence and Occasional Writings and a Sketch of His Contributions to Science (1 ed.). London: Macmillan. Archived from the original on 5 September 2014. Retrieved 16 June 2014. https://archive.org/details/lifejamesclerkm01garngoog ↩

  132. Maxwell, James Clerk (2011). The Scientific Papers of James Clerk Maxwell. Cambridge University Press. ISBN 978-1-108-01225-6. Archived from the original on 2 May 2016. 978-1-108-01225-6 ↩

  133. Maxwell, James Clerk (1990). Harman, P. M. (ed.). The Scientific Letters and Papers of James Clerk Maxwell: 1846–1862. CUP Archive. p. xviii. ISBN 9780521256254. Archived from the original on 12 March 2020. Retrieved 1 February 2020. 9780521256254 ↩

  134. 'The Abbey Scientists' Hall, A.R. p58: London; Roger & Robert Nicholson; 1966 ↩

  135. Seitz, Frederick. "James Clerk Maxwell (1831–1879); Member APS 1875" (PDF). Philadelphia: The American Philosophical Society. Archived from the original (PDF) on 18 October 2011. Retrieved 20 May 2011. https://web.archive.org/web/20111018052416/http://www.amphilsoc.org/sites/default/files/Seitz.pdf ↩

  136. "Rigid Body Sings". Haverford College. Archived from the original on 4 April 2013. Retrieved 26 March 2013. http://www.haverford.edu/physics-astro/songs/rigid.htm ↩

  137. "Selected Poetry of James Clerk Maxwell (1831–1879)". University of Toronto Libraries. Archived from the original on 7 May 2016. Retrieved 27 August 2013. https://tspace.library.utoronto.ca/html/1807/4350/poet400.html ↩

  138. Klein, Maury (2010). The Power Makers: Steam, Electricity, and the Men Who Invented Modern America. Bloomsbury Publishing USA. p. 88. ISBN 978-1-59691-834-4. Archived from the original on 8 May 2016. 978-1-59691-834-4 ↩

  139. Macfarlane, Alexander (1919). Lectures on ten British physicists of the nineteenth century. John Wiley, New York. p. 13. Archived from the original on 14 December 2006. https://archive.org/details/lecturesontenbri00macfrich/page/12/mode/2up?view=theater ↩

  140. "The Aberdeen university review". The Aberdeen University Review. III. The Aberdeen University Press. 1916. Archived from the original on 25 June 2012. https://archive.org/stream/aberdeenuniversi03univuoft/aberdeenuniversi03univuoft_djvu.txt ↩

  141. Jerrold, L. McNatt (3 September 2004). "James Clerk Maxwell's Refusal to Join the Victoria Institute" (PDF). American Scientific Affiliation. Archived from the original (PDF) on 7 July 2012. Retrieved 25 March 2013. https://web.archive.org/web/20120707132916/http://www.asa3.org/ASA/PSCF/2004/PSCF9-04McNatt.pdf ↩

  142. Marston, Philip L. (2007). "Maxwell and creation: Acceptance, criticism, and his anonymous publication". American Journal of Physics. 75 (8): 731–740. Bibcode:2007AmJPh..75..731M. doi:10.1119/1.2735631. /wiki/Bibcode_(identifier) ↩

  143. Theerman, Paul (1986). "James Clerk Maxwell and religion". American Journal of Physics. 54 (4): 312–317. Bibcode:1986AmJPh..54..312T. doi:10.1119/1.14636. /wiki/Bibcode_(identifier) ↩

  144. Hutchinson, Ian (2006) [January 1998]. "James Clerk Maxwell and the Christian Proposition". Archived from the original on 31 December 2012. Retrieved 26 March 2013. https://web.archive.org/web/20121231001816/http://silas.psfc.mit.edu/maxwell/ ↩

  145. Theerman, Paul (1986). "James Clerk Maxwell and religion". American Journal of Physics. 54 (4): 312–317. Bibcode:1986AmJPh..54..312T. doi:10.1119/1.14636. /wiki/Bibcode_(identifier) ↩

  146. "Einstein the greatest". BBC News. BBC. 29 November 1999. Archived from the original on 11 January 2009. Retrieved 2 April 2010. http://news.bbc.co.uk/1/hi/sci/tech/541840.stm ↩

  147. "Newton tops PhysicsWeb poll". Physics World. 29 November 1999. Retrieved 23 November 2024. https://physicsworld.com/a/newton-tops-physicsweb-poll/ ↩

  148. Maxwell, James Clerk (1855). "On Faraday's Lines of Force". Transactions of the Cambridge Philosophical Society. blazelabs.com. Archived from the original on 17 March 2014. Retrieved 27 March 2013. https://www.scribd.com/doc/39568221/maxwell-on-faraday-s-lines-of-force ↩

  149. "1861: James Clerk Maxwell's greatest year". King's College London. 18 April 2011. Archived from the original on 22 June 2013. Retrieved 28 March 2013. http://www.kcl.ac.uk/newsevents/news/newsrecords/2011/04Apr/JamesClerkMaxwell.aspx ↩

  150. O'Connor, J.J.; Robertson, E.F. (November 1997). "James Clerk Maxwell". School of Mathematical and Computational Sciences University of St Andrews. Archived from the original on 5 November 2021. Retrieved 19 June 2021. https://mathshistory.st-andrews.ac.uk/Biographies/Maxwell/ ↩

  151. "ECEN3410 Electromagnetic Waves" (PDF). University of Colorado. Archived from the original (PDF) on 17 March 2014. Retrieved 30 June 2013. https://web.archive.org/web/20140317170802/http://ecee.colorado.edu/~ecen3410/ECEN3410-FirstClass.pdf ↩

  152. Maxwell, James Clerk (1865). "A dynamical theory of the electromagnetic field" (PDF). Philosophical Transactions of the Royal Society of London. 155: 459–512. Bibcode:1865RSPT..155..459M. doi:10.1098/rstl.1865.0008. S2CID 186207827. Archived (PDF) from the original on 28 July 2011. (This article accompanied an 8 December 1864 presentation by Maxwell to the Royal Society. His statement that "light and magnetism are affections of the same substance" is at page 499.) https://upload.wikimedia.org/wikipedia/commons/1/19/A_Dynamical_Theory_of_the_Electromagnetic_Field.pdf ↩

  153. "Year 13 – 1873: A Treatise on Electricity and Magnetism by James Clerk Maxwell". MIT Libraries. Archived from the original on 7 July 2013. Retrieved 30 June 2013. http://libraries.mit.edu/150books/2011/01/19/1873/ ↩

  154. O'Connor, J.J.; Robertson, E.F. (November 1997). "James Clerk Maxwell". School of Mathematical and Computational Sciences University of St Andrews. Archived from the original on 5 November 2021. Retrieved 19 June 2021. https://mathshistory.st-andrews.ac.uk/Biographies/Maxwell/ ↩

  155. Nahin, Paul J. (13 November 2002). Oliver Heaviside: The Life, Work, and Times of an Electrical Genius of the Victorian Age. JHU Press. p. 109. ISBN 978-0-8018-6909-9. Archived from the original on 27 July 2020. Retrieved 27 March 2020. 978-0-8018-6909-9 ↩

  156. B.J. Hunt (1991) The Maxwellians, pages 165,6, Cornell University Press ISBN 0801482348 /wiki/The_Maxwellians ↩

  157. Eyges 1972, p. section 11.6. - Eyges, Leonard (1972). The Classical Electromagnetic Field. New York: Dover. ISBN 9780486639475. https://books.google.com/books?id=4U_2KXNi5pgC ↩

  158. Klaus Mainzer (2 December 2013). Symmetries of Nature: A Handbook for Philosophy of Nature and Science. Walter de Gruyter. p. 8. ISBN 978-3-11-088693-1. 978-3-11-088693-1 ↩

  159. Barrett & Grimes 1995, pp. 7–8 - Barrett, Terence William; Grimes, Dale Mills (1995). Advanced Electromagnetism: Foundations, Theory and Applications. World Scientific. ISBN 978-981-02-2095-2. https://books.google.com/books?id=lA8tgLMRu2kC ↩

  160. Wheen, Andrew (2010). Dot-Dash to Dot.Com: How Modern Telecommunications Evolved from the Telegraph to the Internet. Springer. p. 86. ISBN 978-1-4419-6760-2. Archived from the original on 17 June 2016. 978-1-4419-6760-2 ↩

  161. Johnson, Kevin (May 2002). "The Electromagnetic Field". University of St Andrews. Archived from the original on 27 August 2011. Retrieved 30 June 2013. https://web.archive.org/web/20110827131533/http://www-history.mcs.st-and.ac.uk/Projects/Johnson/Chapters/Ch4_4.html ↩

  162. Johnson, Kevin (May 2002). "The Electromagnetic Field". University of St Andrews. Archived from the original on 27 August 2011. Retrieved 30 June 2013. https://web.archive.org/web/20110827131533/http://www-history.mcs.st-and.ac.uk/Projects/Johnson/Chapters/Ch4_4.html ↩

  163. Michelson, Albert Abraham; Morley, Edward Williams (1887). "On the Relative Motion of the Earth and the Luminiferous Ether". American Journal of Science. 34 (203): 333–345. Bibcode:1887AmJS...34..333M. doi:10.2475/ajs.s3-34.203.333. S2CID 124333204. Archived from the original on 1 August 2020. Retrieved 13 September 2019. https://zenodo.org/record/1450060 ↩

  164. Einstein, Albert. "Ether and the Theory of Relativity". Archived from the original on 21 November 2013. Retrieved 19 December 2013. http://www-history.mcs.st-and.ac.uk/Extras/Einstein_ether.html ↩

  165. "Who was James Clerk Maxwell?". clerkmaxwellfoundation.org. Retrieved 24 December 2024. https://clerkmaxwellfoundation.org/html/about_maxwell.html ↩

  166. "Who was James Clerk Maxwell?". clerkmaxwellfoundation.org. Retrieved 24 December 2024. https://clerkmaxwellfoundation.org/html/about_maxwell.html ↩

  167. Johnson, Kevin (May 2012). "Colour Vision". University of St Andrews. Archived from the original on 11 November 2012. Retrieved 20 May 2013. http://www-history.mcs.st-and.ac.uk/Projects/Johnson/Chapters/Ch4_2.html ↩

  168. Newton, Isaac (1704). Opticks: or a treatise of the reflexions, refractions, inflexions and colours of light. London: Printed for Sam. Smith, and Benj. Walford, Printers to the Royal Society, at the Prince's Arms in St. Paul's Church-yard. Archived from the original on 24 December 2015. https://archive.org/details/opticksortreatisnewt ↩

  169. Young, Thomas (1804). "Bakerian Lecture: Experiments and calculations relative to physical optics". Philosophical Transactions of the Royal Society. 94: 1–16. Bibcode:1804RSPT...94....1Y. doi:10.1098/rstl.1804.0001. S2CID 110408369. Archived from the original on 27 April 2016. https://books.google.com/books?id=7AZGAAAAMAAJ&pg=PA1 ↩

  170. Maxwell, James Clerk (1857). "XVIII.—Experiments on Colour, as perceived by the Eye, with Remarks on Colour-Blindness". Transactions of the Royal Society of Edinburgh. 21 (2). Royal Society of Edinburgh: 275–298. doi:10.1017/S0080456800032117. S2CID 123930770. Archived from the original on 1 August 2020. Retrieved 10 March 2020. https://zenodo.org/record/2041790 ↩

  171. Maxwell, James Clerk (1855). "Experiments on Colour, as Perceived by the Eye, with Remarks on Colour-Blindness". Transactions of the Royal Society of Edinburgh. 21 (2): 275–298. doi:10.1017/S0080456800032117. S2CID 123930770. Archived from the original on 1 August 2020. Retrieved 10 March 2020. (This thought-experiment is described on pages 283–284. The short-wavelength filter is specified as "violet", but during the 19th century "violet" could be used to describe a deep violet-blue such as the colour of cobalt glass.) https://zenodo.org/record/2041790 ↩

  172. Tolstoy 1982, p. 103 - Tolstoy, Ivan (1982). James Clerk Maxwell: A Biography. University of Chicago Press. ISBN 0-226-80787-8. OCLC 8688302. https://search.worldcat.org/oclc/8688302 ↩

  173. Maxwell, J. Clerk (2011) [1890]. "On the Theory of Three Primary Colours". The Scientific Papers of James Clerk Maxwell. Vol. 1. Cambridge University Press. pp. 445–450. ISBN 978-0-511-69809-5. Archived from the original on 23 August 2011. Retrieved 28 March 2013. 978-0-511-69809-5 ↩

  174. Maxwell, J. Clerk (1861). "The Theory of the Primary Colours". The British Journal of Photography. Archived from the original on 12 June 2013. Retrieved 28 March 2013. https://web.archive.org/web/20130612071037/http://notesonphotographs.org/index.php?title=%22The_Theory_of_the_Primary_Colours.%22_The_British_Journal_of_Photography,_August_9,_1861 ↩

  175. Evans, R. (November 1961). "Maxwell's Color Photography". Scientific American. 205 (5): 117–128. Bibcode:1961SciAm.205e.118E. doi:10.1038/scientificamerican1161-118. /wiki/Bibcode_(identifier) ↩

  176. "Archives Biographies: James Clerk Maxwell". The Institution of Engineering and Technology. Archived from the original on 27 June 2013. Retrieved 1 July 2013. http://www.theiet.org/resources/library/archives/biographies/maxwell.cfm ↩

  177. Hill, Melanie. "The Maxwell–Boltzmann distribution" (PDF). Georgia Institute of Technology. Archived (PDF) from the original on 3 January 2014. Retrieved 28 August 2013. http://users.ece.gatech.edu/~alan/ECE6451/Lectures/StudentLectures/Hill_5p4_MaxwellBoltzmannDistribution.pdf ↩

  178. Xiang, Hong Wei (2005). The Corresponding-States Principle and its Practice: Thermodynamic, Transport and Surface Properties of Fluids. Elsevier. p. 51. ISBN 978-0-08-045904-2. Archived from the original on 12 May 2016. 978-0-08-045904-2 ↩

  179. Merali, Zeeya (14 November 2010). "Demonic device converts information to energy". Nature News. doi:10.1038/news.2010.606. Archived from the original on 19 August 2017. Retrieved 5 August 2017. http://www.nature.com/news/2010/101114/full/news.2010.606.html ↩

  180. West, Thomas G. (February 1999). "Images and reversals: James Clerk Maxwell, working in wet clay". ACM SIGGRAPH Computer Graphics. 33 (1): 15–17. doi:10.1145/563666.563671. S2CID 13968486. Archived from the original on 19 April 2021. Retrieved 1 July 2013. http://www.siggraph.org/publications/newsletter/v33n1/columns/west.html ↩

  181. Cropper, William H. (2004). Great Physicists: The Life and Times of Leading Physicists from Galileo to Hawking. Oxford University Press. p. 118. ISBN 978-0-19-517324-6. Archived from the original on 3 December 2016. 978-0-19-517324-6 ↩

  182. Christov, Ivan C.; Jordan, Pedro M. (21 September 2015). "Maxwell's "other" equations". royalsociety.org. Retrieved 2 March 2025. https://royalsociety.org/blog/2015/09/maxwells-other-equations/ ↩

  183. Johnson, Kevin. "Kinetic Theory of Gases". Maths History. Retrieved 7 November 2023. https://mathshistory.st-andrews.ac.uk/Projects/Johnson/chapter-6/ ↩

  184. Rukeyser, Muriel (1942). Willard Gibbs. Doubleday. p. 251. https://archive.org/details/willardgibbs0000muri/page/n4/mode/1up ↩

  185. Maxwell, James Clerk (1868). "On Governors". Proceedings of the Royal Society of London. 16: 270–283. doi:10.1098/rspl.1867.0055. JSTOR 112510. https://doi.org/10.1098%2Frspl.1867.0055 ↩

  186. Mayr, Otto (1971). "Maxwell and the Origins of Cybernetics". Isis. 62 (4): 424–444. doi:10.1086/350788. S2CID 144250314. /wiki/Otto_Mayr ↩

  187. See also: Maxwell, James Clerk (2001). Theory of Heat (9th ed.). Courier Dover Publications. ISBN 978-0-486-41735-6. Archived from the original on 6 June 2020. Retrieved 5 September 2020. 978-0-486-41735-6 ↩

  188. "Atom" . Encyclopædia Britannica. Vol. III (9th ed.). 1878. p. 36. https://en.wikisource.org/wiki/Encyclop%C3%A6dia_Britannica,_Ninth_Edition/Atom ↩

  189. "Attraction" . Encyclopædia Britannica. Vol. III (9th ed.). 1878. p. 63. https://en.wikisource.org/wiki/Encyclop%C3%A6dia_Britannica,_Ninth_Edition/Attraction ↩

  190. "Ether" . Encyclopædia Britannica. Vol. VIII (9th ed.). 1878. https://en.wikisource.org/wiki/Encyclop%C3%A6dia_Britannica,_Ninth_Edition/Ether ↩

  191. "Capillary Action" . Encyclopædia Britannica. Vol. 05 (11th ed.). 1911. https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Capillary_Action ↩

  192. "Diagram" . Encyclopædia Britannica. Vol. 08 (11th ed.). 1911. https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Diagram ↩

  193. "Faraday, Michael" . Encyclopædia Britannica. Vol. 10 (11th ed.). 1911. https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Faraday,_Michael ↩