Letter Re: UV Light for Sterilizing Water
In my reading about water purification one of the things that I read about was ultraviolet (UV) light purification. I discarded it because I live at a fairly high northern latitude (lower intensity light) and it is fairly cold here most of the year. I just noticed something though. Sitting next to me I have a “halogen gooseneck desk lamp” with a 20 Watt halogen JCD bulb in it. While looking at the glass piece that sits between the light and outside world I noticed that it says “UV Filter 001”. This got me to wondering how much UV light …