What is the change in the intensity of red light given off by an incandescent body if the temperature increase from 4000 K to 8000 K?
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Use Stefan-Boltzmann's Law, in it's simplest form. You can find her somewhere here:
http://en.wikipedia.org/wiki/Stefan%E2%8…
but I think it is something as
P=sigma*T^4,
where P is the power, sigma the stefan-Boltzmann's constant and T temperature.
http://en.wikipedia.org/wiki/Stefan%E2%8…
but I think it is something as
P=sigma*T^4,
where P is the power, sigma the stefan-Boltzmann's constant and T temperature.