Monday 5 December 2016

The first light bulbs

The first light bulbs
Arc lamps give very bright light, but they are too bulky, uncomfortable, dirty and require proper care, that scientists began to look at alternatives, in particular, tried to drop the current through the thin filament conductor. The filament was heated up and radiated light.
In 1878, the Briton Joseph Swan was placed in a sealed glass bulb with a thin filament of carbonized cellulose, and heating it to remove the gases from the coal, and then to create a vacuum sucked from the flask to the air.
However, the real victory in these races for the creation of bulbs was won by the American Thomas Alva Edison. A year after the Swan he made the lamp had a thin thread of carbonized bamboo, and in 1882 he built new York's first power station which supplied energy for 10,000 lamps. So began the rapid use of electricity.

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