22 maio 2019

In 1884, electrical engineer Rookes Crompton wrote, “At the...



In 1884, electrical engineer Rookes Crompton wrote, “At the recent Crystal Palace Electrical Exhibition, a couple from the country asked the price of an incandescent lamp at one of the stalls, and being supplied with it for 5s., expended a box of matches in trying to light it, and then declared the whole thing was a swindle.”

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