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Heinrich Welker
open-in-new
<p>Heinrich Johann Welker (9 September 1912 in <a href="/facts/Ingolstadt/u8dG3RHc">Ingolstadt</a> – 25 December 1981 in <a href="/facts/Erlangen/rsTkdwDp">Erlangen</a>) was a German theoretical and applied <a href="/facts/Physicist/cQcgvSIm">physicist</a> who invented the "<a href="/facts/Transistron/04VsBJqD">transistron</a>", a <a href="/facts/Transistor/Bmr8zwL0">transistor</a> made at Westinghouse independently of the first successful transistor made at Bell Laboratories. He did fundamental work in III-V <a href="/facts/Compound_semiconductor/RMcsYTWQ">compound semiconductors</a>, and paved the way for <a href="/facts/Microwave/HmVSN31Y">microwave</a> <a href="/facts/Semiconductor/zFf3mGTE">semiconductor</a> elements and <a href="/facts/Laser_diode/TjHzJteV">laser diodes</a>. </p>