Uranium glassware glowing under ultraviolet lightUranium glass used as lead-in seals in a vacuum capacitor
Uranium glass is glass which has had uranium, usually in oxide diuranate form, added to a glass mix before melting for colouration. The proportion usually varies from trace levels to about 2% uranium by weight, although some 20th-century pieces were made with up to 25% uranium.[1][2]
First identified in 1789 by German chemist Martin Heinrich Klaproth, uranium was soon being added to decorative glass for its fluorescent effect. James Powell’s Whitefriars Glass company in London, England, was one of the first to market the glowing glass, but other manufacturers soon realised its sales potential and uranium glass was produced across Europe[3] and later In Ohio.[4]
Uranium glass was once made into tableware and household items, but fell out of widespread use when the availability of uranium to most industries was sharply curtailed during the Cold War in the 1940s to 1990s. Most such objects are now considered antiques or retro-era collectibles, although there has been a minor revival in art glassware. Otherwise, modern uranium glass is now mainly limited to small objects like beads or marbles as scientific or decorative novelties.
^Big Book of Vaseline Glass, by Barrie Skelcher, Pub. Schiffer
^"Vaseline and Uranium Glass (ca. 1930s)". ORAU Museum of Radiation and Radioactivity.
^"These People Love to Collect Radioactive Glass. Are They Nuts?".
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