EVsHackadayabout 2 hours ago
A Sloshing-Mercury-Powered Neon Light
2 min read
A sloshing-mercury-powered neon light recreates a 1675 effect observed by astronomer Jean Picard. Adding neon gas at 40 millitorr produced a bright orange-red glow. Krypton glowed blue but dimmer. Teflon and copper beads also worked, but Galinstan wetted glass and prevented charge buildup.
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