George Westinghouse: Fabulous Inventor |
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Halaman 100
Then he turned on the green light , which indicated that it was all right for the train to proceed . But there was always the danger that a night watchman might fall asleep . Sudden illness , or some other mishap might pave the way to ...
Then he turned on the green light , which indicated that it was all right for the train to proceed . But there was always the danger that a night watchman might fall asleep . Sudden illness , or some other mishap might pave the way to ...
Halaman 134
Now , four hundred electric light lamps fed through the new transformers were placed in a building in Lawrenceville , about four miles distant from the dynamo in the Westinghouse laboratory . The Lawrenceville system utilized current ...
Now , four hundred electric light lamps fed through the new transformers were placed in a building in Lawrenceville , about four miles distant from the dynamo in the Westinghouse laboratory . The Lawrenceville system utilized current ...
Halaman 135
footing with a large city in obtaining light for its homes and electric power for its factories . The industrial town of Greensburg , thirty miles northeast of Pittsburgh , in the heart of the coal and gas district , became the first ...
footing with a large city in obtaining light for its homes and electric power for its factories . The industrial town of Greensburg , thirty miles northeast of Pittsburgh , in the heart of the coal and gas district , became the first ...
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