Researches on Diamagnetism and Magne-crystallic Action: Including the Question of Diamagnetic PolarityLongmans, Green, and Company, 1870 - 361 страници |
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Страница 30
... ball of dough , made from bismuth powder , was placed between two bits of glass and pressed to the thickness of a quarter of an inch . It was then set edgeways between the plates and pressed again , but not so strongly as in the former ...
... ball of dough , made from bismuth powder , was placed between two bits of glass and pressed to the thickness of a quarter of an inch . It was then set edgeways between the plates and pressed again , but not so strongly as in the former ...
Страница 40
... ball of soft iron , separated by small fixed distance from the pole of an electro- magnet , was attracted with a force exactly proportional to the square of the exciting current . § Now this attraction is in each case the produce of two ...
... ball of soft iron , separated by small fixed distance from the pole of an electro- magnet , was attracted with a force exactly proportional to the square of the exciting current . § Now this attraction is in each case the produce of two ...
Страница 41
... ball increases in the simple ratio of the current itself . Our way to a comparison of magnetism and diamagnetism is thus cleared . We know the law according to which the mag- netism of an iron ball increases , and we have simply to ...
... ball increases in the simple ratio of the current itself . Our way to a comparison of magnetism and diamagnetism is thus cleared . We know the law according to which the mag- netism of an iron ball increases , and we have simply to ...
Страница 42
... balls of opposite names . The balls were repelled when the current flowed . Preserving the current constant , the index above was turned in a direction opposed to the repulsion until the beam stood again at zero . The torsion necessary ...
... balls of opposite names . The balls were repelled when the current flowed . Preserving the current constant , the index above was turned in a direction opposed to the repulsion until the beam stood again at zero . The torsion necessary ...
Страница 43
... ball was then scoured with sea - sand , and finally boiled in hydrochloric acid . The bismuth balls thus purified were placed upon the hollows of the beam , Fig . 2 , and their repulsions by currents of various strengths determined in ...
... ball was then scoured with sea - sand , and finally boiled in hydrochloric acid . The bismuth balls thus purified were placed upon the hollows of the beam , Fig . 2 , and their repulsions by currents of various strengths determined in ...
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action angles antimony attraction ball bar of bismuth battery beam carbonate of iron cause circuit cleavage coil copper copper wire cores Crown 8vo crystal cube cylinders deflection deportment diamagnetic bodies diamagnetic polarity diameter direction distance Edition effect electric current electro-magnet electromotive force exciting the magnet exhibited experiments Faraday fibre fluid force acting former galvanometer glass heat helix hence horizontal inch induced JOHN TYNDALL latter line of compression longest dimension magnetic bodies magnetic field magnetic force magnetic power magnetisation mass memoir metal molecular motion needle netic north pole observed obtained opposite optic axis parallel paramagnetic particles passed perpendicular phenomena Phil placed plane plate Plücker Poggendorff's Annalen pole to pole portion position prism produced repelled repulsion reverse rheostat set equatorial soft iron south pole spar sphere strength substance sulphate supposed suspended tangent galvanometer tion torsion balance tourmaline tube weight Woodcuts