 | John W. Urquhart - 1880 - 360 pages
...the wire is shown by its action on a galvanometer, by its heating 4 inches of platinum wire -0067 in. diameter, by its making a powerful electro-magnet, by its decomposing water and other tests. The principle thus brought prominently forward by Dr. Siemens and Professor Wheatstone,... | |
 | John W. Urquhart - 1880 - 364 pages
...the wire is shown by its action on a galvanometer, by its heating 4 inches of platinum wire -0067 in. diameter, by its making a powerful electro-magnet, by its decomposing water and other tests. The principle thus brought prominently forward by Dr. Siemens and Professor Wheatstone,... | |
 | 1881 - 670 pages
...considerable strength were quickly generated in the system. The explanation of this rhich Wheatstone gave is as follows : — " The electro-magnet always retains...feeble currents in alternate directions in the coils, which after being reduced to the same direction pass into the coils of the electro-magnet in such a... | |
 | 1881 - 678 pages
...the system. The explanation of ti;s •which Wheatstone gave is as follows: — "The electro-mflgnet always retains a slight residual magnetism, and is...feeble currents in alternate directions in the coils, which after being reduced to the same direction pass into the coila of the electro-magnet in such a... | |
 | Heinrich Schellen - 1884 - 536 pages
...the wire is shown by its action on a galvanometer, by its heating 4 inches of platinum wire .0067 in diameter, by its making a powerful electro-magnet,...being reduced to the same direction, pass into the coils of the electro-magnet in such a manner as to increase the magnetism of the iron core ; the magnet... | |
 | William T. Jeans - 1887 - 356 pages
...by Professor Wheatstone: The electro-magnet always retains a slight residual magnetism, so is always in the condition of a weak permanent magnet; the motion of the armature occasions feeble currents in its coils in alternate directions, which, brought into the same direction, pass into the coil of the... | |
 | 1873 - 546 pages
...electromagnet are joined to form a single circuit. The electromagnet, retaining a slight residual magnetism, is therefore in the condition of a weak permanent...motion of the armature occasions feeble currents in the coils thereof, which, after being rectified in the same direction by means of a rheotrope, pass... | |
 | Institution of Electrical Engineers - 1881 - 662 pages
...considerable strength were quickly generated in the system. The explanation of this which Wheatstone gave is as follows : — •' The electro-magnet always...feeble currents in alternate directions in the coils, which after being reduced to the same direction pass into the coils of the electro-magnet in such a... | |
 | 1873 - 1044 pages
...electromagnet are joined to form a single circuit. The electromagnet, retaining a slight residual magnetism, is therefore in the condition of a weak permanent...motion of the armature occasions feeble currents in the coils thereof, which, after being rectified in the same direction by means of a rheotrope, pass... | |
 | 1873 - 524 pages
...electromagnet are joined to form a single circuit. The electromagnet, retaining a slight residual magnetism, is therefore in the condition of a weak permanent...motion of the armature occasions feeble currents in the coils thereof, which, after being rectified in the same direction by means of a rheotrope, pass... | |
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The force required to move the machine will be far greater, showing a great increase of magnetic power in the horse-shoe ; and the existence of an energetic current in the wire is shown by its action on a galvanometer, by its heating 4... 
