Archived posting to the Leica Users Group, 2000/01/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]And we also have to worry about a Mine Shaft Gap, and the purity of our precious bodily fluids. > Canon also used Thorium in their early 35F2.0 lenses. It isn't > Thorium you > have to worry about though. It's Cobalt Thorium G. According to a > reputable > source: > > "Cobalt thorium G has a radioactive half-life of ninety-three > years. > If you take, say, fifty H-bombs in the hundred > megaton range and > jacket them with cobalt thorium G, when they are > exploded they > will produce a doomsday shroud. A lethal cloud of > radioactivity > which will encircle the earth for ninety-three years!" > > Alex > > ;o) >