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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1834 edition. Excerpt: ...he had thus produced. With this, and a few other things like it, the ancients were acquainted; but they knew not that they were the results of a power pervading all material bodies, and extensively concerned in all the operations of nature. Having stated this, he remarked that it was only by slow degrees this knowledge was acquired. The first step to arranging these facts was made by Dr Gilbert, an English physician, who in the year 1600, published a treatise on the magnet, in which he declared that several other bodies besides amber--such as the diamond, and many other precious stones, glass, sulphur, sealing-wax, rosin--can, by friction, or rubbing, be made to attract light substances; and he was thus led to discover a property common to them all. The Greek name for amber being electron, the bodies having it were called electrics, and the power they manifested was termed electricity. The observations of Newton, Boyle, and others, contributed in some degree to a knowledge of it; but, until the eighteenth century, little, comparatively, had been accomplished. He then informed them that a person named Hawksbee invented what is called an electrical machine, so that large supplies of electricity might be procured, and that others improved it, in which there is an electric, like the piece of amber--a rubber, like the piece of cloth--a conductor, to draw off, as it were, the electricity, produced--an insulator on which the person or thing to be electrified is to be placed, and some machinery for setting the electric in motion. The delight of the children was, however, greatly increased when he took out of the mahogany case a small electrical machine--set it in action--placed them one by one on a stool with glass legs--told them how they might...
| ISBN-13 | 9781151627933 |
|---|---|
| ISBN-10 | 1151627933 |
| Weight | 0.32 Pounds |
| Dimensions | 9.00 x 6.00 x 0.22 In |
| List Price | $14.14 |
| Format | Paperback |
|---|---|
| Pages | 90 pages |
| Publisher | |
| Published On | 2009-12-01 |
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