On Feb 2, 4:03*pm, Quadibloc wrote:
On Jan 30, 8:46*pm, Quadibloc wrote:

On Jan 30, 5:22*pm, RichA wrote:

The Kodak Ektamate and Ektar lenses all use thorium glass. *Pretty
harmless just sitting around but I wouldn't want to press my eye to
one for any length of time.

http://www.surplusshed.com/pages/item/l3759.html

There once were some World War II lenses that used radioactive glass,
but that is long gone. Any surplus from the days of digital Group III
fax machines would not use lenses made from that kind of glass -
because the glass isn't made any more.

I see that some radioactive glass was used even in the 1960s, so I'm
mistaken...

http://www.bnphoto.org/bnphoto/LostS...adioactive.htm

John Savard

That's a very interesting link about radioactive glass.

Of all the possible bad elements, it seems thorium exposure is among
the least dangerous, especially when encapsulated within glass..