The Electrical Review, Volume 4Electrical review, Limited, 1876 - Electrical engineering |
Contents
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Common terms and phrases
action apparatus armature arrangement battery bell cause cells cent charge circuit coils communication conductivity conductor connected copper core corresponding cylinder deflection direction disc discharge distance earth Eastern Telegraph Company effect electric current electric telegraph electro-magnet electro-motive force electrodes elements employed exhibited experiments fact Faraday galvanometer glass gutta-percha heat inches increase induced instrument insulated iron length lever Leyden jar light liquid machine magnetic magnetisation means measured ment messages Messrs metal method miles motion needle negative observed obtained Ohm's law ohms ordinary paper passing phenomena placed plate platinum polarisation poles position produced Professor quantity railway relay repairing resistance rheostat rotation selenium semaphore sent ship Siemens signal spark station surface tele telegrams Telegraph Company Telegraph Engineers TELEGRAPHIC JOURNAL telluric currents temperature thermo-electric tion torpedo traffic receipts train tricity tube velocity vessel voltaic wire zinc
Popular passages
Page 115 - These signals are not signals of vessels in distress and requiring assistance. Such signals are contained in article 31.
Page 200 - TATE in the Chair. The following Candidates were elected Members of the Society : — Horatio Waddington, Esq., late Fellow of Trinity College, Cambridge.
Page 48 - ... or in other words the force of the current is equal to the sum of the electro-motive forces divided by the sum of the resistances.
Page 88 - ... thickness, and of the same material, perfect equilibrium is established, so that a rheomotor, however powerful, will not produce the least deviation of the needle of the galvanometer from zero. The circuits Z ba CZ, and Z ab CZ, are in this case precisely equal, but as both currents tend to pass in opposite directions through the galvanometer, which is a common part of both circuits, no effect is produced on the needle. Currents are however established in Z b CZ, and Z a CZ, which would exist...
Page 12 - ... form the extremities of the coils by which they are united to the circuit. On the upper face of each cylinder is a double brass spring moveable round a centre, so that its ends may rest at pleasure either on the ends of the thick connecting wires, or may be removed from them and rest only on the wood.
Page 115 - ... in place of that light, three red lights in globular lanterns, each not less than 10 inches in diameter, in a vertical line one over the other, not less than...
Page 176 - The most striking of these is witnessed from the summit of Adam's Peak, which is a mountain rising extremely abruptly from the low country to an elevation of 7,200 feet above the sea. The phenomenon referred to is seen at sunrise, and consists apparently of an elongated shadow of the mountain projecting westward to a distance of about seventy miles.
Page 12 - On the upper face of each cylinder is a double brass spring moveable round a centre, so that its ends may rest at pleasure either on the ends of the thick connecting wires, or may be removed from them and rest only on the wood. In the latter position, the current of the circuit must pass through the coil, but in the former position, the current passes through the spring, and removes the entire resistance of the coil from the circuit. When all the springs rest on the wires, the resistance of the whole...
Page 115 - Rules, requires in part that a vessel which is not under command shall by day carry "in a vertical line one over the other not less than 6 feet apart, where they can best be seen, two black balls or shapes each not less than 2 feet in diameter
Page 200 - ... meridian, and the bar be then struck with a brass hammer, the state of equilibrium will be disturbed, as is shown by the motion of the needle. This, however, is not the case with a piece of soft iron round which an electric current is passing. The apparatus employed in the experiments on " normal magnetisation " consisted of an arrangement for passing a current round rods of soft iron of varying lengths, so constructed that any number of the surrounding coils can be removed in the manner of an...