1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Stefan-Boltzmann Law?

  1. Nov 27, 2011 #1
    Hello, I am in DIRE need of help with my science fair project and am completely stuck. All/most relevant information should be able to be found here: http://sciencebuddies.org/science-f...OjEsaWE6UGh5cyxwOjUscmlkOjEyNDE1MzMw&from=TSW

    1. I am stuck on number 7, "Now that you have the data, calculate the energy flow and the energy carried by the visible and infrared photons." The squares of construction paper were 4*4 inches. Data for the temperature is as follows (Celsius; Kelvin)
    Red: 38.4; 311.4
    Blue: 40.4; 313.4
    Yellow: 37.4; 310.4
    White: 36.6; 309.6
    Black:45.1; 318.1

    2. Its something to do with the Stephan-Boltzmann Law but I'm not entirely sure

    3. I have no clue where to even BEGIN on a solution
  2. jcsd
  3. Nov 27, 2011 #2
    Anyone? :(
  4. Nov 27, 2011 #3
    I think you need to use P=σAT4, it gives you the energy flow from a surface with temperature T.
    σ is Stefan–Boltzmann constant and is equal to 5.67x10-8 J/sm2K4
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Similar Threads for Stefan Boltzmann
Chemical potential using Boltzmann equation