Задача 50408.

The radiation power of a completely black body is 10 kW. Find the magnitude of the radiating surface of the body, if it is known that the wavelength at which the maximum spectral density of its energy luminosity falls is 7 * 10^-5 cm.

Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
If you have any questions about the decision, write. I will try to help. File in image format.