Blackbody radiator

  • #1
clarkandlarry
20
1

Homework Statement



Does a blackbody at 200K emit twice as much total radiation as when its temperature is 100K?

Homework Equations



N/A

The Attempt at a Solution



I'm not sure, but I think it is yes because if the temperature is doubled, then the energy of the photons will be doubled, therefore it will emit twice as much radiation. Is this correct?
 

Answers and Replies

  • #2
Redbelly98
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There is a well-known equation that relates radiated power to temperature of a blackbody. It is surely in you class notes or text book.
 
  • #3
clarkandlarry
20
1
the only equation in my notes with temperature in it is:
(wavelength) x temperature = 0.002898mK

i don't know how this relates to the question though
 
  • #4
Redbelly98
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There should be another equation, involving radiated power. And temperature raised to some integer power. It probably has a Greek lowercase "sigma" in it as well.

If not in your notes, check the text book.
 

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