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A Sloshing-Mercury-Powered Neon Light | Hackaday
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A Sloshing-Mercury-Powered Neon Light | Hackaday

Interesting · hackaday.com · generic

In 1675, while transporting a barometer by night, the astronomer Jean Picard noticed a glow inside its glass tube, just above the mercury. As the mercury sloshed and splashed across the surface of …

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Domainhackaday.com
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