THIS little book of 75 pages is designed to give to amateurs practical information as to the construction of a small working dynamo-machine. What is aimed at is the building up of a machine capable of ...
Special to THE NEW YORK TIMES. New York Times subscribers* enjoy full access to TimesMachine—view over 150 years of New York Times journalism, as it originally appeared. *Does not include Games-only ...
A small Wheatstone-style dynamo mounted on a wooden base. A 13" diameter iron crank wheel with a wooden handle is used to operate the demonstration. Two vertical field poles each wrapped with ...
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