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Radium Girls. The Radium Girls were female factory workers who contracted radiation poisoning from painting radium dials – watch dials and hands with self-luminous paint. The incidents occurred at three factories in the United States: one in Orange, New Jersey, beginning around 1917; one in Ottawa, Illinois, beginning in the early 1920s; and ...
Radium dial. A 1950s radium clock, exposed to ultraviolet light to increase luminescence. Radium dials are watch, clock and other instrument dials painted with luminous paint containing radium-226 to produce radioluminescence. Radium dials were produced throughout most of the 20th century before being replaced by safer tritium -based luminous ...
The 24-hour dial has Roman numerals on the outer band and Hindu–Arabic numerals on the inner one. [ 1] The history of watches began in 16th-century Europe, where watches evolved from portable spring-driven clocks, which first appeared in the 15th century. The watch was developed by inventors and engineers from the 16th century to the mid-20th ...
Leopold Hoys (1713–1797), German clockmaker, Bamberg, John Whitehurst (1713–1788), English clockmaker, Derby. Jean Romilly (1714–1796), Swiss watchmaker, Paris, pocket watch. Jean François Poncet (1714–1804), Swiss watchmaker of French origin, clockmaker of the court in Dresden and director of the Grünes Gewölbe.
The Elgin National Watch Company, commonly known as Elgin Watch Company, was a major US watch maker from 1864 to 1968. The company sold watches under the names Elgin, Lord Elgin, and Lady Elgin. For nearly 100 years, the company's manufacturing complex in Elgin, Illinois, was the world's largest site dedicated to watchmaking.
Slotkin urged Democrats to "reclaim their patriotism", rejecting those who "wrap themselves in a flag but spit in the face of the freedoms it represents." DNC Day 4: Live coverage of speaker ...
Open-face watches. An open-face pocket watch made by the Swiss watchmaker Omega, c. 1970. An open-faced, or Lépine, [ 9] watch, is one in which the case lacks a metal cover to protect the crystal. It is typical for an open-faced watch to have the pendant located at 12:00 and the sub-second dial located at 6:00.
Watch. A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps, or any other kind ...