The Magnetoscope, a Philosophical Essay

The Magnetoscope, a Philosophical Essay

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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. 1852 edition. Excerpt: ...necessarily two contrary modes of manifestation, each of which possess an attractive and a repulsive force, with a tendency to equilibrium., In order to elucidate better the truth of this first proposition, to appreciate more fully all the particulars which constitute the Magnetoid condition, let us in a rapid sketch sum up all the characteristics of the Magnet itself. 36. More than six hundred years before the Christian era, Naturalists had noticed in a mineral which the Greeks called "Magries" the property of attracting Iron. This mineral is that which the Chemists know as the Sesquioxyde of Iron, or Magnet. When we plunge a piece of Magnet into iron filings, these filings are attached to the Magnet in such a manner as to form a kind of head of hair at each end; the middle part retains no filings, or hardly any, whilst the quantity and the particular hairy disposition of them becomes the more evident the more you consider it towards each end. The middle part of the Magnet is called the Neutral Line; one of the extremities receives the name of Boreal or North Pole, on account of its constant direction towards the north, when the Magnet is suspended by its neutral line in such a manner as to have freedom of motion. The other extremity, consequently, points to the south, and receives the name of Austral or South Pole. If we break a Magnet in two pieces, each piece has its two poles and its neutral line. However numerous and however small those fragments may be, each exhibits the same particularity; only, the larger the piece, the more considerable is the quantity of iron filings attached to each Pole. When we present to each other the Poles of different Magnets, we perceive that there is attraction between the contrary Poles, and...
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Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • United States
  • English
  • black & white illustrations
  • 1236833236
  • 9781236833235