A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 898
Lxvin SOFT IRON AMMETERS 873 … Fig. 808.—Soft iron ammeter ofthe repulsion type. instrument does not then tend to tighten or slacken the wire. For some purposes the hot-wire ammeter has this advantage, that owing to the heating in the wire being independent of the direction of the current, the instrument will give a reading when…
Physics
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