3 ms·
A simpler approach that forgoes the lens, relies on the combination of UV and heat, and is promoted under the name "SODIS" and already in use in some places: h
by pflanze 12y ago
A simpler approach that forgoes the lens, relies on the combination of UV and heat, and is promoted under the name "SODIS" and already in use in some places:
https://en.wikipedia.org/wiki/Solar_water_disinfection https://en.wikipedia.org/wiki/Solar_water_disinfection