# Electric incandescent lighting

Electrical World and Engineer, 1902 - Architecture - 508 pages

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### Contents

 CHAPTEE PACK I Artificial Illumination 1 Early History of Incandescent Lighting 18 Elementary Electrical Principles 43 Physics of the Incandescent Elec 65 tric Lamp 65 83 Mounting and Treatment of Fila ments 99 Sealingin and Exhaustion 118 Lamp Fittings 135
 Light and Illumination 198 Systems of Lamp Distribution 210 House Fixtures and Wiring 237 XIII 284 XV 324 XXIV 445 XXV 468 427 496

 The Incandescent Lamp 1631 163
 439 507

### Popular passages

Page 57 - Ohm's Law. — The fundamental relation between current and electromotive force was enunciated by Dr. GS Ohm in 1827, and is known as Ohm's law. It may be stated as follows: The current strength in any circuit is directly proportional to the sum of all the electromotive forces in the circuit. This relation expressed algebraically is E = KI, or W j = K, a constant.
Page 262 - Interior conduits may be made in a variety of ways, one of which is shown in Fig.
Page 45 - ... with the physical laws of diffusion of gases. If a permeable membrane separates two volumes of any gas, or two solutions of any gas at different pressures, the molecules of the gas will pass through the membrane in both directions until the pressure is equal on both sides. As the excess of movement is from the point of higher pressure to the point of lower pressure, attention is paid only to this side of the process, and we say that the gas diffuses from a point of high tension to one of lower...
Page 336 - After the battery has been in use for some time it will be found that the...
Page 352 - On charging the cell, that is, on sending a current through it in the opposite direction to that of the current which it gives 190 [CH.
Page 363 - The cells are arranged in series, the positive terminal of one cell being connected to the negative terminal of the next.
Page 274 - ... current branches or divides, part of the current flowing through the branch, and the remainder flowing through the original circuit. A shunt circuit. Branch Conductor.
Page 58 - Again, if an incandescent lamp has a resistance (hot) of 220 ohms, and is connected to...
Page 48 - If, for example, two such cells be joined together, with the negative pole of one cell connected to the positive pole of the...
Page 179 - In such cases the bombardment from any portion of the negative leg is necessarily intercepted by the positive leg in the plane of the filament, so that the globe is protected in this plane by the interposition of the positive leg.