Any body radiates energy at various wavelengths. Figure 4.118 shows the intensity of the
Chapter 0, Problem 62(choose chapter or problem)
Any body radiates energy at various wavelengths. Figure 4.118 shows the intensity of the radiation of a black body at a temperature T = 3000 kelvins as a function of the wavelength. The intensity of the radiation is highest in the infrared range, that is, at wavelengths longer than that of visible light (0.40.7m). Max Plancks radiation law, announced to the Berlin Physical Society on October 19, 1900, states that r() = a 5(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 = hc T k where c = speed of light, h = Plancks constant, and k = Boltzmanns constant.)
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