Word and Image

Glows in the dark

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Green glass of non-descript green color (of little interest) until a recent trip to Wilmington. It “glows!” under black light. It’s not radioactive. There was a time when they used real radium on watch dials to get them to glow in the dark. The numbers were painted with radium and the workers got tongue cancer and died.

From a net search: “Also known as uranium glass, Vaseline glass glows bright green under ultraviolet light, thanks to the uranium oxide added to the glass in its molten state. In natural or indoor light, Vaseline glass has a yellow or yellow-green tinge with an oily sheen, which is where its name comes from.”

Don’t have any. Don’t want any. But, I learned a new useless fact to clutter my mind.

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