Задача 50307.

Find the flux density of photons at a distance of 1 m from the point isotropic source of light 1 watt when the light contains two spectral lines with wavelengths of 0.7 microns and 0.4 microns, the intensity of which is treated as 1: 2, respectively.

Detailed entry, formulas and laws used in the decision, the withdrawal of the formula.
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