03-02-2018, 03:10 AM
(02-28-2018, 11:14 AM)EdCa Wrote: I was reading about an UV lamp that kills bacteria in a domestic water supply. The directions said to only view the UV light through a normal pane of glass. So, the glass filters on our sextants will block the UV rays and protect our eyes.I think the main consideration should be given to the intensity of UV light. I have a little device with UV light to filter outdoor water. Tried it once and still alive. It uses 2 AA bateries. I think its power not exactly the same which is coming from the Sun. But, yes, the glass supposed to be a good protection.
Ed