- #1
DGriffiths
- 8
- 0
I've seen much mention in websites of matt black surfaces being better emitters of infra red than shiny silver ones so if a matt black and shiny silver surface are heated to about 100 deg C the black one will cool down more quickly as a result of this! Doesn't Wien's law state that the amount of I.R. emitted by a hot body is only dependent on the temperature??
My question is then why is a shiny silver surface a much poorer emitter than a matt black one?
My question is then why is a shiny silver surface a much poorer emitter than a matt black one?