Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Emissive power for a gas

  1. Aug 5, 2009 #1
    How does the emissive power for a gas depend on temperature? Is there a conceptual generalization (along the lines of Planck's Law) for the radiation of power from a partially transparent material or must a specific emission spectrum be chosen?

    Thanks
     
  2. jcsd
  3. Aug 5, 2009 #2
    Okay, after rereading it I notice that my original post is a little lacking in detail, so let me form it into a more concrete problem:

    Say that there's a sphere of radius R surrounded by empty space but fill with gas X and at temperature T. What is the total power emitted to the surrounding space and what are the relevent properties of the gas?

    I assume that any possible answer is bounded by the power emitted by a blackbody of the same size, but how is the actual power related to the properties of the gas?

    Now, turning it up a notch, say there's is a finite mass M of the gas normally distributed with standard deviation S. What is the total emitted power from the mass when seen very far from the center?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Emissive power for a gas
  1. Field Emission (Replies: 3)

  2. Atmospheric emission. (Replies: 1)

  3. Photon emission? (Replies: 2)

  4. Stimulated emission (Replies: 7)

Loading...