e/Undark

Information
has gloss	eng: Undark was a trade name for luminous paint made with a mixture of radioactive radium and zinc sulfide, as produced by the U.S. Radium Corporation between 1917 and 1938. It was used primarily in watch dials. The people working in the industry who applied the radioactive paint became known as the Radium Girls, because many of them became ill and some died from exposure to the radiation emitted by the radium contained within the product. The product was the direct cause of Radium jaw in the dial painters. Undark was also available as a kit for general consumer use and marketed as glow-in-the-dark paint.
lexicalization	eng: Undark
instance of	(noun) a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating; "artists use `paint' and `pigment' interchangeably" pigment, paint

Media
media:img	Undark (Radium Girls) advertisement, 1921, retouched.png