Radium - Periodic Table of Videos
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The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about radium, a famous (and dangerous) element.
The case of the “radium girls” became infamous in the United States during the first half of the 20th century. Several young women who were employed by a watch factory were believed to be poisoned as a result of painting watch dials with glow-in-the-dark radium paint.