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?

1 comments:

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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