'Thomas Edison opened his own electrical
power stations in London and New York. Wires from his power stations carried
electricity for thousands of light bulbs. Whole cities could now be lit by electricity
– indoors and out. On December 20, 1880, the first electricity streetlights in
New York were switched on, along Broadway. But Edison’s wires couldn’t carry
electricity very far. He was using “Direct Current” or DC electricity, which
always flows in the same direction around the circuit. The wires heated up as
they carried the electricity, wasting energy and losing power.'
Not so long ago there were no electrical
inventions at al. no computers, no televisions… not even any light bulbs. I didn’t
know about electrical history, I was surprised at bulbs. We can understand the
fascinating story of electricity from the very beginning, when people first
realized what electricity was – and just what it could do.
148 words
0 件のコメント:
コメントを投稿