Freitag, 5. Oktober 2012

Keyboard Lighting

The Radium Girls were workers for the United States Radium Corporation. They painted watch dials with glow-in-the-dark paint containing radium.
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Scott K hat gesagt…

A bit of random history, but the 'Trimphone' telephone used to have a glow in the dark dial. It was unfortunately radioactive - which, as you could imagine ended badly with a recall, and a situation where they had thousands of radioactive dials that unfortunately led to a situation where they had become too dangerous to dispose of conventionally.

Bill M hat gesagt…

Radium wears off when touched unless it would have been placed under glass key tops. Eventually it still would have deteriorated.

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