Radium chemicals and cause radioluminescence. Radium, in the form of radium chloride, was discovered by Marie and Pierre Curie in 1898. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1911. In nature, radium is found in uranium and (to a lesser extent) thorium ores in trace amounts as small as a seventh of a gram per ton of uraninite. Radium is not necessary for living organisms, and adverse health
Radium Girls was about a penny and a half per dial (). The brushes would lose shape after a few strokes, so the U.S. Radium supervisors encouraged their workers to point the brushes with their lips ("lip, dip, paint"), or use their tongues to keep them sharp. Because the true nature of the radium had been kept from them, the Radium Girls painted their nails, teeth, and faces for fun with the deadly paint produced at the factory. Many of the workers became sick; it is unknown how many died from exposure to radiation. Many of the women later began to suffer