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Descrição
Mapa Mental por beduardo1000, atualizado more than 1 year ago
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Criado por beduardo1000
quase 9 anos atrás
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the evolution
- of electric power
- in the eary 1800the first time electricity
was available for cities like new york paris
and london it seemed magical and
mysterious
- electrisity presented some danger because it could
not be seenas it travelled through the wires so ir
was important to warn people about the hazards of
this amazing new invention
- thomas a edison invented the firstelectrical
current meter it measured the amount of
metal deposited on a copper plate
- the light bulb too has gone throuha series of
developments the condept was developed by thomas
edison joseph swan and other scientists they were called
filament buloos or incandescennt bulbs
- in the eary 1800the first time electricity
was available for cities like new york paris
and london it seemed magical and
mysterious
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