America Votes 13

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Language: English

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Some of Earth's greatest philosophers brilliantly used the concept of field lines to help visualize how one object can be moved by another object without actually touching each other. The system most generally in use was the electromagnetic telegraph due to S. however. or modifications of his system. electris power and other purposes(all it may be repeated made possible and practicable by the perfection of the dynamo machine). he was working in Pittsburgh for Westinghouse).

Pages: 514

Publisher: CQ Press; 13 edition (November 30, 1979)

ISBN: 0871871831

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