Brush Arc Lamps

Philadelphia 1878 "Miniature moons on carbon points, held captive in glass globes" A description of the "wonder of 1878": an installation of Brush arc lamps in the window of Wanamaker's…

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Lifter

High Voltage "Lifter"   Electrostatic lifters are fascinating devices that have become popular construction projects for experimenters all over the world.   NASA's recent patent on a type of lifter design…

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