Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 325
oken at this point. The magnetthen releases the armature, the spring S causes thehammer to fall back into its original position, the circuitis again completed, and the action goes on as before. Acontinuous ringing is thus kept up. 9- Telephone.Experiment 5. Arrange apparatus as shown in Fig. 257.… … Fig. 257. completed by attaching the wires to two small metal platesseparated by a small wedge-shaped piece of graphite, or stovepolish. Place the finger on the upper plate, and press upon itwith different degrees of force. THE EFFECTS OF THE ELECTRIC CURRENT. 317 Describe and explain the movements…
Physics
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