Convert (4.9.10) into an equation for the radiant energy per unit wavelength for a blackbody radiation source. From this equation, determine the peak emission wavelength, that is, the wavelength at which the radiant energy per wavelength is maximum, for T = 300 K.

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U(w)dw = 1 ehw/kBT - ħVn³ (7V/³3) w³dw. -23 (4.9.10)