The Technical World Magazine, Volume 4Technical World Company, 1906 |
From inside the book
Results 6-10 of 92
Page 51
... wire to carry six mes- sages instead of four . I did not succeed ; so that , financially , I am worse off than I would have been had I never invented the quadruplex system at all . " Cables are made chiefly in England , though France ...
... wire to carry six mes- sages instead of four . I did not succeed ; so that , financially , I am worse off than I would have been had I never invented the quadruplex system at all . " Cables are made chiefly in England , though France ...
Page 52
... wire , The copper core , at first a single bolt , is copper strand the gutta - percha is fixed- formerly in layers and by hand , but now by machinery which makes a seamless coating . Outside , again , is fixed the shield of steel wires ...
... wire , The copper core , at first a single bolt , is copper strand the gutta - percha is fixed- formerly in layers and by hand , but now by machinery which makes a seamless coating . Outside , again , is fixed the shield of steel wires ...
Page 54
... wire of high resistance , in the center of which a tiny circular mirror ( about the size of a dime ) is suspended . Attached to the back of the mirror is a small magnet ; and a beam of light from an oil lamp is thrown on the mirror ...
... wire of high resistance , in the center of which a tiny circular mirror ( about the size of a dime ) is suspended . Attached to the back of the mirror is a small magnet ; and a beam of light from an oil lamp is thrown on the mirror ...
Page 55
... wire to the other ; while to the two trans- verse bars are connected , respectively , the positive and negative poles of a bat- tery of electrical cells . For the auto- matic despatch of messages , a machine known as the " modified ...
... wire to the other ; while to the two trans- verse bars are connected , respectively , the positive and negative poles of a bat- tery of electrical cells . For the auto- matic despatch of messages , a machine known as the " modified ...
Page 56
... wire , suspended between the poles of a powerful magnet ; and a fine glass tube , no thicker than a coarse hair , bent in the form of a siphon , and attached to a very fine stretched wire , leaving it free to move back- wards or ...
... wire , suspended between the poles of a powerful magnet ; and a fine glass tube , no thicker than a coarse hair , bent in the form of a siphon , and attached to a very fine stretched wire , leaving it free to move back- wards or ...
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