large radioactive camera lens (thorium 232)
Sunday, October 25th, 2009
i scored this lovely old camera at a flea market. the lens partly consists of the radioactive element thorium.
by adding thorium to the lens glass, a high refractive index could be achieved while maintaining a low dispersion. thus, radioactive camera lenses used to be state-of-the-art in high-demand photography.
oh, and here’s a better picture:
http://www.flickr.com/photos/bionerd/3887528914/
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