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February 22, 2012 02:01 am PST
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/5dTL3OrQu2o/howto-make-a-4000-volt-infrar.html
HOWTO make a 4,000-volt infrared "snooperscope"
From the August 1951 ish of Mechanix Illustrated, a modest HOWTO describing a "Snooperscope" that requires a 4,000 to 6,000-volt power-supply to fire infrared light at and through the materials around you. Construction of the snooperscope: The image converter tube is mounted in a plastic drinking cup 3-1/2 in. high by 2-1/2 in. in diameter. [...]Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/5dTL3OrQu2o/howto-make-a-4000-volt-infrar.html
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