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Dew
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<p>Dew is <a href="/facts/Water/0lkXnJPK">water</a> in the form of <a href="/facts/Droplets/m4kuGAgH">droplets</a> that appears on thin, exposed objects in the <a href="/facts/Morning/QhXLHedr">morning</a> or <a href="/facts/Evening/9UkUnxBo">evening</a> due to <a href="/facts/Condensation/yvmkI08A">condensation</a>. As the exposed surface cools by <a href="/facts/Thermal_radiation/1PD9jtCv">radiating</a> its heat, atmospheric moisture condenses at a rate greater than that at which it can <a href="/facts/Evaporation/tgvIlJys">evaporate</a>, resulting in the formation of water droplets. </p><p>When temperatures are low enough, dew takes the form of ice, called <a href="/facts/Frost/0zan2Azj">frost</a>. </p><p>Because dew is related to the temperature of surfaces, in late summer it forms most easily on surfaces that are not warmed by conducted heat from deep ground, such as grass, leaves, railings, car roofs, and bridges. </p>