Uva water penetration

Description:The sun has two properties that apply, heat and light. The suns rays are hotter at the equator and cold at the poles. Hotter in summer than in winter and hottest at mid day when the sun is overhead. The intensity of UVB starts out at dawn very low and gradually increases till midday when the sun is overhead and then the intensity gradually decreases as the afternoon progresses. We could roughly say that UVB travels with the heat of the sun.

Views: 2059 Date: 2018-09-28 Favorited: 74