If sun UV rays can poison purified water?
SODIS = Solar Disinfection.
UV rays purify contaminated water. Here's how
SODIS is being used after the tsunami in Sri
No it can't poison water. If that was the case nothing could live in or around water. Animals drink it. People drink it. Trees grow around and in water. Fish swim it.
In fact, it's the opposite. UV rays can purify contaminated water. The SODIS method (look it up) is used in many countries around the world where clean water is not available.
Water is put into a clean PET bottle and left in the sun for 6 hours. After that the water is clean and safe to drink.
UV rays disinfect and purify water !
No. Heat from the sun is not what causes tan it is the ultraviolet rays similar to the rays that cause skin cancer. The reason heat is asoociated with them is that usually when the sun is bright enough that the UV rays are causing a tan infrared rays are also causing you to feel hot. This is why a bright sun on a cool day is very dangerous. The UV rays are still reaching…
You can get sun burnt in the pool just like you can get sun burnt standing out side of it. As long as the sun's rays can reach your skin you are at risk. What you also have to understand is that the rays are bouncing off the water as well which is then reflecting back onto your skin, which means that you are actually getting a double dose of harmful rays. Bottom line....put on…