On Periodical Change of Terrestrial MagnetismKelly & Walsh, 1879 - 62 pagine |
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On Periodical Change of Terrestrial Magnetism: Read Before the North-China ... Fritz W. Schulze Anteprima non disponibile - 2017 |
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Agonic line Appendix attraction axis of rotation bottom read cause centre CHANGE OF TERRESTRIAL chapter coincide compass curves density direction diurnal variation earth east to west easterly ecliptic electricity equator ethereal waves fiery fluid interior focus force geographical pole globe gravity heat hemis Humboldt increased influence iron irregularities latitude latter line from bottom line from top liquid magne magnetic axis magnetic current magnetic foci magnetic intensity magnetic lines magnetic needle Magnetic North Pole magnetic nucleus maxima maximum mean daily position meridian meridian of Paris minima molten mass netic north magnetic pole northern hemisphere observations Ocean oval parallel perihelion periodical changes phenomena phere planet revolving Shanghai shews Sir James Ross solar spots solenoid solstice Sourabaya South Pole southern sun and moon sun's supposed surface system of magnetic temperature Terrestrial Magnetism theory tidal motion tide wave tion tism top read westerly Western variation westward Woosung Yangtsze
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Pagina 56 - In the Journal of the North- China Branch of the Eoyal Asiatic Society, new series, No. X, Shanghai 1876 (Appendix II) some highly interesting remarks are contained by the Eev. Father M. Dechevreus, SJ: " J'ai tout dernierement recon...
Pagina 33 - ... remarkable fact which has been established, that the magnetic force is greater in both the northern and southern hemispheres in the months of December, January, and February, when the sun is nearest to the earth, than in those of May, June, and July, when he is most distant from it : whereas if the effect were due to temperature, the two hemispheres should be oppositely instead of similarly affected in each of the two periods referred to.
Pagina 52 - Ether, which term we may apply to the highly attenuated matter existing in the interplanetary spaces, being an expansion of some or all of these atmospheres, or of the more volatile portions of them, would thus furnish matter for the transmission of the modes of motion which we call light, heat, etc.
Pagina 1 - Between these points there are found places of no dip \ all such places are said to be situated on the Magnetic Equator, a plane not far removed from the terrestrial Equator, The...
Pagina 62 - Tables for 1863 (the data being rst reduced to Greenwich mean time), the author arrived at the following law of the progression of the wave of high water : — In all land areas in the northern hemisphere the wave of high water tends to revolve round the coast in the direction of the hands of a watch, and in like areas in the southern hemisphere against the hands of a watch. Theoretically, this law should hold good in proportion as land areas approximate to the circular form, with wide uninterrupted...
Pagina 52 - ... or 10' with occasional horns of twice that height. It is not at all unlikely that it may even turn out to have no upper limit, but to extend from the sun indefinitely into space.
Pagina 37 - Water is not a solitary exception to an otherwise general law. There are other molecules than those of this liquid which require more room in the solid crystalline condition than in the adjacent molten condition. Iron is a case in point. Solid iron floats upon molten iron exactly as ice floats upon water. Bismuth is a still more impressive case, and we could shiver a bomb as certainly by the solidification of bismuth as by that of water.
Pagina 52 - ... forces has, I think I may venture to say, been established. If magnetism be, as it is proved to be, connected with the other forces or affections of matter, if electrical currents always produce, as they are proved to do, lines of magnetic force at right angles to their lines of action, magnetism must be cosmical, for where there is heat and light there is electricity, and consequently magnetism. Magnetism, then, must be cosmical and not merely terrestrial. Could we trace magnetism in other planets...