![]() ![]() ![]() Shades can range from a translucent canary yellow to an opaque milky white depending on how much uranium is added to the glass, from just a trace to upwards of 25 percent. Uranium glass mosaics existed as early as 79 AD.Īlso known as canary or vaseline glass, uranium glass is typically yellow or green in color and glows bright green under a black light. Prior to World War II, and well before its potential for energy or weaponry was recognized, uranium was commonly used as a coloring agent in everything from plates, glasses, and punch bowls to vases, candlesticks, and beads. Courtesy of Dan and Lisa Sawyer/the_glowing_glass_guy_ ![]() When it comes to radiological hazards, says health physicist Phil Broughton, “There is a world of difference between detectable and dangerous.” Uranium glass is also known as canary glass due to this common canary-yellow color. They thought school administrators had overreacted. The scientists dismayed by the events at Haddon Township High School were not upset that someone had brought in a radioactive plate. Radioactive antiques have a long history, as well as a certain glow that is highly desired by some collectors today. The entire school was evacuated, and those in the nuclear science field were aghast.īut thousands of similarly radioactive plates and cups can be found in antique stores, thrift shops, and possibly your own kitchen cabinets. When the plate registered as radioactive, someone at the school panicked and called in a hazmat team. The student had received a Geiger counter, an instrument used to measure radiation, for Christmas, and wanted to do an experiment. In January of 2021, a New Jersey teenager brought a piece of an antique Fiestaware plate to a high-school science class. ![]()
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