When They Electrified Christmas
Cars That Think
DECEMBER 3, 2021
The lights were connected in series, so if a bulb burned out, the rest of the line went dark. The earliest Christmas lights used miniature versions of Edison's pear-shaped carbon-filament bulbs, which had fragile exhaust tips that were prone to breaking. Linda Hall Library , in Kansas City, Mo. In 1922, Meggers.
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