The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . below the tangent plane to the sphere as the centre recedesfrom the equator, and end by pointing straight towardsthe south pole when the centre reaches the magnetic axis(see fig. 6). \. \Mien we reflect that in all our e.\periment3 the pro-perties of magnets, whether native, such as the loadstone,or artificial, such as the needles magnetized by rubbingwith the loadstone, have p


The Encyclopedia britannica; a dictionary of arts, sciences, and general literatureWith new maps, and original American articles by eminent writersWith American revisions and additions, bringing each volume up to date . below the tangent plane to the sphere as the centre recedesfrom the equator, and end by pointing straight towardsthe south pole when the centre reaches the magnetic axis(see fig. 6). \. \Mien we reflect that in all our e.\periment3 the pro-perties of magnets, whether native, such as the loadstone,or artificial, such as the needles magnetized by rubbingwith the loadstone, have proved alike, and tliat every M A U .\ E T i iS U 223 Earthsforce 3ifransW*tioa pU purely magnetic action on a magnet has its source in someother magnetic body, we are naturally led to the con-clusion that the reason why at every point of the earthssurface the axis of a freely suspended magnet assumes adefinite position is simply that the earth itself is a greatmagnet, and that in observing the declination and dip weore simply exploring the magnetic field of the earth. Itis true that, according to the experiment above described,the declination would every where be zero, and the magneticequator would coincide with the geographical, but thatarises merely because we assumed our earthkin, forsimplicity of explanation, to be symmetrically magnetized,80 that its lines of force ran in planes passing th


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Keywords: ., bookauthorbaynesth, bookcentury1800, bookdecade1890, bookyear1892