Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 250
aroundthe coil in such a direction that it increases the strength of thepermanent magnet pole, the flexible plate is bent in still farther.The next induced current being in the opposite direction de-creases the strength of the permanent magnet pole, and allowsthe elasticity of the iron to bend the… … FIG. 170. — Thereceiver. 236 PHYSICS OF THE HOUSEHOLD second. The plate thus produces 200 sound waves per secondin the air in the cap of the receiver, and the ear -hears a soundwhich is made up of 200 waves. We notice, then, that the telephone wire carries not sound,but electricity. When a person…
Physics · Home Economics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Libro primo [-quinto] d'architettvra ... (1566)](https://img.insideoutlibrary.com/img/200/ia-libroprimoquinto00serl-150-166.webp)
