Задача 50065.

Determine the wavelength , which accounts for the maximum spectral density of the emissivity of a black body at temperatures of liquid helium (4.2 K) and liquid nitrogen (77 K), at normal temperature (300 K) and the temperature of the Sun (5800 K). In what spectral region of electromagnetic radiation do the calculated wavelengths fall?

A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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