Tuesday, April 5, 2016

Snow and Sun: A Simple Lesson in Physics

An early spring snow in April survives in shade, but even though the ambient temperature is 27°F, the sun is warm enough to melt it. Radiant heat – the kind the sun gives – heats objects. The grass and earth are warmed, causing the snow to melt. And you thought the sun heated the air, didn't you?


RobinL said...

That snow was most unwelcome! The early spring fooled us into thinking that winter was gone till next year. Ha!

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