Proceedings of the Institution of Electrical Engineers, Volume 4Institution of Electrical Engineers., 1875 Vols. for 1970-79 include an annual special issue called IEE reviews. |
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acid action apparatus appears battery borers cable fired carbon cause cells charge chemical chloride circuit coil copper wire core Daniell's deflection diameter discharge disconnected distance Ditto duplex earth-plate Eastern Telegraph Company effect electric telegraph Electric Telegraph Company electromotive force employed experiments fault feet fuze galvanometer Government Telegraphs gutta-percha Heliograph Holyhead inches increase India india-rubber induction instrument insulated iron joints land-line Leclanché battery Leclanché cells length lightning conductors London magnetic Mance Members messages metals miles mirror Morse needle observed obtained ohms ordinary paper passing pipes plate platinum polarisation poles Post Office Postal Telegraphs PREECE President Railway relay Road sal-ammoniac Siemens signals Sir Charles Wheatstone Sir Francis Ronalds Society of Telegraph solution station Street Submarine Cables sulphate Tele Telegraph Department Telegraph Engineers teredo terminal terminal station tested tion tube underground vibrations wire yards zinc
Popular passages
Page 298 - ... off from the commutator. The commutator consists of three rings — one of these rings is complete for three quarters of the circle, the other quarter being cut away. Another ring is cut away three quarters, leaving the one quarter.
Page 328 - Mr. Cooke is entitled to stand alone as the gentleman to whom this country is indebted for having practically introduced and carried out the electric telegraph as a useful undertaking...
Page 429 - I went into the cube and lived in it, and using lighted candles, electrometers, and all other tests of electrical states, I could not find the least influence upon them, or indication of anything particular given by them, though all the time the outside of the cube was powerfully charged, and large sparks and brushes were darting off from every part of its outer surface.
Page 250 - A' and B' are left free; and it is clear that the coil forms a sort of Leyden jar when thus used : an interval, however short it may be, must elapse in accumulating a charge which at intervals discharges itself and causes a greater flow in the vacuum-tube in addition to that which passes continuously. It may be stated that the capacity of the accumulator has to be carefully adjusted to prevent any cessation of the current, to avoid, in fact, a snapping discharge at distant intervals. The periodic...
Page 247 - Besides 2000 more cells like those just described, we are putting together 2000 cells, with the chloride of silver in the form of rods, which are cast on the flattened silver wires, as in a battery described by De La Rue and...
Page 246 - ... long. The other element consists of a flattened silver wire passing by the side of the cork to the bottom of the tube, and covered, at the upper part above the chloride of silver and until it passes the stopper, with thin sheet...
Page 27 - Now though this pretty contrivance possibly may not yet answer the expectation of inquisitive experiment ; yet 'tis no despicable item, that by some other such way of magnetick efficiency, it may hereafter with success be attempted, when Magical History shall be enlarged by riper inspections : and 'tis not unlikely, but that present discoveries might be improved to the performance.
Page 207 - Perhaps it is strictly accurate to say that the difference of potential is produced by the contact, and that the current which is maintained by it is produced by chemical action."* And, lastly, that in a series of cells the electromotive force is due to the sum of the differences of potential produced by all the contacts. The above quotations may be taken as affording the plainest notion of the new contact theory ; and it will be seen that its fundamental propositions are briefly...
Page 27 - Why has no serious trial yet been made of the qualifications of so diligent a courier? And if he should be proved competent to the task, why should not our kings hold councils at Brighton with their ministers in London? Why should not our government govern at Portsmouth almost as promptly as in Downing Street? Why should our defaulters escape by default of our foggy climate?
Page 249 - A A' and B B' (fig. 1), coiled side by side, each being 174 yards (159 metres) long, another with two wires each 350 yards (320 metres) long ; of the latter we have two coils.