Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 439
46 Glass greater than any of the above. The resistance of insulators decreases very greatly withrising temperature. Some of them, e.g. glass, behave aselectrolytes as soon as they begin to soften. 388. Resistance Boxes. — For making electrical measure-ments a number of standard resistances are… … Fig. 266. obtained. For this purpose the ends of each coil, afterbeing wound double or non-inductively to prevent sparkingand magnetic effects, are connected to a series of brass blocks, A, B, C, D (Fig. 266), andthe whole attached to a con-venient frame or box. Anyof the spaces between theblocks…
Physics
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