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Radium is a chemical element; it has symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra 3 N 2).
We’ve picked out some of the most interesting posts from the Be Amazed subreddit. All 8.3 million members share a fascination for people, places, and events that have made a mark throughout history.
Image credits: VastCoconut2609 Cognitively, pessimistic headlines and stories reinforce our negativity bias, which, according to Ruiz-McPherson, "can lead to maladaptive thought patterns ...
Interesting Facts for Adults. 11. If you cut down a cactus in Arizona, it can result in a class 4 felony and up to 25 years in prison. ... Google Images was created as a result of Jennifer Lopez ...
Factory workers who worked with radium-containing luminous paint, known as the Radium Girls, often licked the tips of their paintbrushes in order to produce a finer point. In doing so, the workers ingested some of the radioactive paint; this eventually led to serious health problems including cancer, bone damage, and anemia .
November 1917 ad for an Ingersoll "Radiolite" watch, one of the first watches mass marketed in the USA featuring a radium-illuminated dial. Radium was discovered by Marie and Pierre Curie in 1898 [1] and was soon combined with paint to make luminescent paint, which was applied to clocks, airplane instruments, and the like, to be able to read them in the dark.
Image credits: Weird, Fantastic and Odd Things #7. The Akhal-Teke is probably the most beautiful horse breed in existence. Apart from their breathtaking metallic sheen (lending them their nickname ...
Interesting facts for adults. Australia is wider than the moon. ... Google Images was created after Jennifer Lopez wore the green dress at the 2000 Grammys. Lemons float, but limes sink.