. The panorama of science and art. tism, hang togetheras at first. But if, instead of soft iron, the wires be made ofhardened steel, the repulsion once excited will cojitixiue afterthe magnet is removed, from the property of steel which ena-bles it to retain its magnetism. 5. A tee-totum with a piece of iron in the top of it, may,even while in motion, be taken up by a magnet, and its mo-tion, while thus suspended vertically, will continue as if itremained upon the table. The experiment may be renderedstill more diverting, by taking up another tee-totum by thebottom of the first, and this secon
. The panorama of science and art. tism, hang togetheras at first. But if, instead of soft iron, the wires be made ofhardened steel, the repulsion once excited will cojitixiue afterthe magnet is removed, from the property of steel which ena-bles it to retain its magnetism. 5. A tee-totum with a piece of iron in the top of it, may,even while in motion, be taken up by a magnet, and its mo-tion, while thus suspended vertically, will continue as if itremained upon the table. The experiment may be renderedstill more diverting, by taking up another tee-totum by thebottom of the first, and this second may have its motion inan opposite direction to the other. 6. Another experiment with which children are much de-lighted, consists in making the figure of a swan in wax, withan iron tongue ; if this swan be placed upon a basin of water,and a piece of bread, with a magnet concealed in it, be heldat some distance, the swan will immediately proceed towardsit, and will follow it in any direction. AER O S1A3:iOIT-2IA&rrET3SI> ^n^mt-eri lyJa*J>ft*U Ji46fi/?t^ fir Ju//a///}.r>^r S CZftrrptfr/. Srp 2^. fSt4. MAGNETISM. 187 Abstract. Abstract of Magnetism. 1. That principle which produces the phenomena of ]\Tag-netism, is not cognizable by our senses, except by its effects ;but it is considered to be a fluid, and spoken of under thedenomination of the magnetic Jiidd. 2. Iron has been usually considered as the only substancesusceptible of magnetism ; but late investigations, which havebeen made with great care, have rendered it extremely proba-ble that both nickel and cobalt likewise submit to the inliu-ence of the same power. 3. Magnets are either natural or artificial; natural magnetsare ores of iron, dug out of the earth in a magnetical state ;artificial magnets are made of steel, by the help of a naturalmagnet, or of another artificial magnet. 4. In every magnet, there are two opposite points, which atall times and places, will, if the magnet be at liberty to moveeither
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Keywords: ., bookcentury1800, bookdecade1, booksubjecttechnology, bookyear1823
