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For a black body, the temperature and the wavelength of the emission maximum, Amax, are related by Wein's
Law, expressed as:
T/°C
λmax/nm
Values of Amax from a small pinhole in an electrically heated container were determined at a series of
temperatures. The results are given below. Deduce the value of Planck's constant.
1000
2181
c = 3.00 x 108 m/s
1500
1600
λmaxT =
2000
1240
k= 1.38 x 10-34 J-S
hc
4.965k
2500
1035
3000
878
3500
763

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