I want to know if I can use it to watch an eclipse - and cannot buy welding glass (ideal to look at the sun during an eclipse) before tomorrow morning.
2007-03-18 06:38:46 · 2 answers · asked by Sunil 1 in Science & Mathematics ➔ Astronomy & Space
I so don't think so. The fact that the film is black and altered by x-ray radiation does not mean it absorbs any radiation.
http://www.mreclipse.com/Totality/TotalityCh11.html
http://news.bbc.co.uk/1/hi/sci/tech/1376184.stm
2007-03-18 08:28:44 · answer #1 · answered by supersonic332003 7 · 0⤊ 0⤋
It used to be that you could use unexposed (regular) camera film to safely observe the Sun. But in the 70s (I think) the common formula for making the emulsion in film changed, so you can no longer safely use it. I'm not sure about x-ray film specifically, but I wouldn't risk it. Your best bet is to make a pin-hole viewer (do an internet search, you'll find lots of examples).
2007-03-19 12:49:10 · answer #2 · answered by kris 6 · 0⤊ 0⤋