Comment by throwway120385
15 hours ago
Gamma is technically a kind of electromagnetic emission, so it falls off with the square of the distance. The others fall off as you say.
15 hours ago
Gamma is technically a kind of electromagnetic emission, so it falls off with the square of the distance. The others fall off as you say.
Everything falls off as inverse square in 3D. His point is that the atmosphere attenuates it as well.