Your body temperature is about 300 K. At what wavelengh do you radiate most strongly?

Question

Your body temperature is about 300 K. At what wavelengh do you radiate most strongly? What region of the electromagnetic spectrum is this? What law allows you to determin this relationship?

Answer 1

Max wavelength= B/T



B is wins constant, 2.89 x 10^6

T is the temperature in Kelvin



Max Wavelength= (2.89 x 10^6)/300

Max Wavelength= 9,633.33 nm





This is the visible region of the EM spectrum

Answer 2

Clues: Approximate yourself as a blackbody. Then use Wien's Law.



You can compare your answer from Wien's Law to the em spectrum to decide which part it lies in, or you can use some intuition -- body heat is picked up by IR detectors, so you know even without doing the problem that you are radiating in IR for the most part.

Answer 3

JUST USE THE WEIN'S DISPLACEMENT LAW MAN. T(lambda,m)=b im sure youve heard of it?