Kryptonite is a fictional element that was said to have come from the planet Krypton. It looks like a bright green rock or gemstone, and can be deadly for Superman or other native Kryptonians. There IS, however, a chemical element called krypton. It's a mostly inert gaseous element that's used in fluorescent and gas discharge lamps. The element was discovered by British chemists William Ramsay and Morris Travers, who was born on this date in 1872. Upon distilling liquified argon, the two scientists collected three new gases: neon, krypton and xenon. They derived the names from the Greek words for "the new," "the hidden," and "the strange."
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