This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1864 Excerpt: ...of soft iron these fluids are supposed to be neutral or inert, and that when they are decomposed the particles of one fluid, called the austral or southern magnetism, attract those of the boreal or northern fluid, and vice versd, while they each repel one another. The force required to separate the two fluids in a ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1864 Excerpt: ...of soft iron these fluids are supposed to be neutral or inert, and that when they are decomposed the particles of one fluid, called the austral or southern magnetism, attract those of the boreal or northern fluid, and vice versd, while they each repel one another. The force required to separate the two fluids in a magnetic body is called the Coercive Force. The fluids are not separated with equal facility in all bodies. In some, as for example in soft iron, they yield easily and separate at once; in others, as hardened steel, the fluids yield with difficulty, and a powerful magnet is required to effect the separation. The harder and better tempered the steel the more difficult it is to separate the two fluids. Soft iron, as we before mentioned, in contact with a magnetized bar becomes a magnet at once, and on being removed returns to its neutral condition. With hardened steel it takes considerable force and some time to render it a magnet, and on being removed from the source by which it became a magnet it continues a magnet. Directive Force of Magnets.--A permanently magnetized needle, balanced on its neutral point so that it can turn freely in a horizontal direction, assumes, after a few oscillations, a determinate direction nearly north and south. If, instead of placing the needle on a pivot, it be attached to a piece of cork and placed in a vessel of water so that the needle may H float in a horizontal position, it will, in a short time, come to a state of rest, pointing in the same direction as if it were balanced on a pivot. In this experiment it will be found that the needle, once in meridian, does-not move either towards the north or the south. Hence we infer that the force exerted on the needle is simply a directive force, and the force which cause...
Read Less
Add this copy of The Elements of Experimental Physics, Acoustics, Light to cart. $18.00, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of The Elements of Experimental Physics, Acoustics, Light to cart. $28.30, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
