williamwright wrote:
On 05/10/2020 12:28, JohnP wrote:
A black radiator gives off more heat.

Why should the efficiency of a surface in absorbing light affect its
efficiency in radiating heat?

Because that's very, very basic physics. :-)

You possibly could design a surface that absorbs light well but does't
similarly absorb heat (heat is next down along the em spectrum from
light) but it would be difficult.


--
Chris Green
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