Day: 20 May 2025

Clouds, water, glass: surprising things that solar UV can pass through

First published 27 June 2017, revised 20 May 2025 Do you know that over 90% of UV can pass through light cloud, at half a metre depth under water UV is still 40% as intense as it is at the surface, and some UV can pass through glass! We’re all becoming more aware of the […]