Lightning Conductors and Lightning Guards: A Treatise on the Protection of Buildings, of Telegraph Instruments and Submarine Cables, and of Electric Installations Generally, from Damage by Atmospheric DischargesWhittaker and Company, 1892 - 544 стор. |
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æther air gap alternating currents alternative path arrangement building cable cage capacity centim centimetres charge chimney circuit cloud coatings coil condenser conducting copper wire critical resistance damage damping deflagrated diameter difference of potential discharge disruptive discharge distance disturbance ductor earth connections effect electric electrostatic energy experiments feet fused gallon jars galvanometer gas-pipes glass Hertz Illustrations impedance inch induction inertia inside insulated iron wire joints jump lead Leyden jar liable lightning conductor lightning flash lightning guard lightning protector lightning rod Lord Rayleigh machine magazines magnetic melted metal metres millimetre observed ohms ordinary oscillations oscillatory outer overflow pipes plates portion powder practical protection quarter period radiation REESE LIBRARY resistance rush self-induction side-flash soldered spark gap spark length spark occurs spiral striking struck surface surgings telegraph terminals theory thick copper thing tinfoil tion tube violent waves wire round yards
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Сторінка 169 - ... may come, be of ample dimensions and in thoroughly perfect electrical connection with the earth, the edifice with all that it contains will be safe, and the conductor might even be surrounded by gunpowder in the heaviest storm without risk or danger. All accidents may be said to be due to a neglect of these simple elementary principles. The most frequent sources of failure are conductors deficient either in number, height, or conductivity, bad joints, or bad earth connections.