Researches on Diamagnetism and Magne-crystallic Action: Including the Question of Diamagnetic PolarityLongmans, Green, and Company, 1870 - 361 страници |
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Страница 20
... weight from one end of a fibre of cocoon silk a vertical axis was obtained ; a bit of card was then slit and fitted on to the axis , so that when the model was laid on one side , the card stood like a little horizontal table in the 20 ...
... weight from one end of a fibre of cocoon silk a vertical axis was obtained ; a bit of card was then slit and fitted on to the axis , so that when the model was laid on one side , the card stood like a little horizontal table in the 20 ...
Страница 52
... weight merely . The core opposite to the latter was removed , and the current sent round that helix only which surrounded the former . A piece of Bristol board was placed against the end of the core , and the torsion - head was so ...
... weight merely . The core opposite to the latter was removed , and the current sent round that helix only which surrounded the former . A piece of Bristol board was placed against the end of the core , and the torsion - head was so ...
Страница 65
... weight necessary to effect a separation , when the magnet was excited by the same current , amounted to 1 gramme . Here an interval of about th of an inch was sufficient to reduce the attractive force toth of that exerted in the case of ...
... weight necessary to effect a separation , when the magnet was excited by the same current , amounted to 1 gramme . Here an interval of about th of an inch was sufficient to reduce the attractive force toth of that exerted in the case of ...
Страница 82
... weight fixed to the other end , sus- pended the beam horizontally from a silk fibre . Attaching the fibre to a movable point of suspension , the little sphere could be caused to dip into the interior of the helix as it stood between the ...
... weight fixed to the other end , sus- pended the beam horizontally from a silk fibre . Attaching the fibre to a movable point of suspension , the little sphere could be caused to dip into the interior of the helix as it stood between the ...
Страница 113
... weight 840 milligrms . Squares of the magnetic intensities 36.58 27.60 26.84 16.33 Quotients of the repulsions by the magnetic intensities 0.902 0.929 0.906 0.920 The constancy of the quotient in the second column proves that the ratio ...
... weight 840 milligrms . Squares of the magnetic intensities 36.58 27.60 26.84 16.33 Quotients of the repulsions by the magnetic intensities 0.902 0.929 0.906 0.920 The constancy of the quotient in the second column proves that the ratio ...
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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