The telephone system of the British post office. A practical handbook (1901)
Herbert, Thomas Ernest · London, New York, Whittaker and Co. · leaf 160
nts are of an exceedingly sudden character, hence protectionwhich will suffice for slow heavy currents will be useless in the case oflightning. If an explosive such as gun-cotton is laid upon a stone in theopen air and is ignited with a match nothing beyond a fizz will takeplace, but if fired with… … Figure iig. ihe result that the stone will be blown to pieces. Lightning behavesin an analogous manner to the gun-cotton fired by a detonator. Theelectro-magnetic inertia resistance offered by a coil of wire to a lightningdischarge is enormous, and, if given a chance to rebound and avoidtraversing…
Telephone · Postal service
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