THE EVOLUTION OF ELECTRIC POWER

in the early 1800, the first time electricity was available for cities like newyork, paris and london.
1. it seemed magical and mysterious to people
it was mostly used for illumination, gas and oil lamps or candles were no longer necessary
electricity presented some danger, because it could not be seen as it travelled thorough the wires, so it was important to warn people about the hazards of this amazing new invention
thomas a edison invented the first electrical current meten
the light bulb too has gone through a series of developments. the concept was developed for thomas edison, joseph swan and other scientists
1. they were called filament bulbs or incandescent bulbs
another type of lamps, the fluorescent lights, were generated by stimulating a substance with invisible ultraviolet light

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	Criado por isapuenayan mais de 9 anos atrás