Any body radiates energy at various wavelengths. Figure4.118 shows the intensity of the
Chapter 4, Problem 62(choose chapter or problem)
Any body radiates energy at various wavelengths. Figure4.118 shows the intensity of the radiation of a blackbody at a temperature T = 3000 kelvins as a function ofthe wavelength. The intensity of the radiation is highestin the infrared range, that is, at wavelengths longer thanthat of visible light (0.40.7m). Max Plancks radiationlaw, announced to the Berlin Physical Society on October19, 1900, states thatr() = a5(eb/ 1).Find constants a and b so that the formula fits the graph.(Later in 1900 Planck showed from theory that a =2c2h and b = hcT k where c = speed of light, h = Plancksconstant, and k = Boltzmanns constant.)
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