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Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices"; (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing company · leaf 185

An illustration from Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices";, 1917, leaf 185
i8o ELECTRIC POWER AND DEVICES. … 434. WIRELESS TELEGRAPHY. Marconi coherer. Themost important part of the receiver is the coherer, which consists of a small glass tube about two and a half millimeters ininternal diameter and some four centimeters in length.Two silver pole pieces are lightly fitted into this tube,separated by a gap…

Mechanical movements

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