An isotropic point source emits light with wavelength \( \lambda=589 \mathrm{~nm} \). The raditi... VIDEO
An isotropic point source emits light with wavelength \( \lambda=589 \mathrm{~nm} \). The radition power of the source is \( P=10 \) W. Find: the distance between the source and the point at which the mean concentration of photons is equal to \( n=100 \mathrm{~cm}^{-3} \).https://bit.ly/YTAI_PWAP https://www.pw.live
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