Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray (1912)
Martin, James Madison, 1866-1947 · St. Louis : C.V. Mosby · leaf 37
ION BETWEEN MAGNETS. All magnets possess one property in common—namely, that ofattraction and repulsion. Magnetism obeys the same laws thatgovern and control electricity—i. e., like poles repel and unlikepoles attract. An interesting experiment may be performed bymagnetizing two ordinary cambric… … Fig. 6.—Horseshoe magnet. N, north pole; S, south pole. will attract metallic objects the same as the magnet that magnet-ized it. To increase the influence of a bar magnet, it should bebent into the shape of a horseshoe, as shown in Fig. 6. In thehorseshoe magnet the distance between the poles is…
