1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Blackbody radiation and stefans constant

  1. Apr 30, 2005 #1
    What is the rate of energy radiation per unit area of a blackbody at a temperature of 260K ?

    Where's the tricky part in this question?

    Surely the answer to this question can't be just

    stefans constant * T^4

    ie. 5.67x10^-8 * 260^4 = 259.105 W/m^2
  2. jcsd
  3. Apr 30, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper

    Not every problem is tricky. The hard work was done to derive the constant. If you had been asked to that, it would be a whole different thing.
  4. Apr 30, 2005 #3
    That's the question. Nothing else was asked.

    What confuses me is how it says ...per unit area...in the question. So I'm thinking maybe they want some other number, I'm not sure
  5. Apr 30, 2005 #4


    User Avatar
    Science Advisor
    Homework Helper

    What's the definition of Stefan-Boltzmann's constant...?

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Blackbody radiation and stefans constant
  1. Blackbody Radiation (Replies: 3)

  2. Blackbody radiator (Replies: 3)

  3. Blackbody radiation (Replies: 3)