User: Why is the sun more intense at high altitude
Assistant: It's commonly known that the sun is more intense at higher altitudes. However, contrary to popular belief, the sun is not more intense due to being closer to the sun, but the angle of incidence of the sun. The angle of incidence is steeper, and therefore the density of the sun's  radiant energy is concentrated to a high density in a smaller area. This makes the sun's energy more intense