A Physical treatise on eletricity and magnetism v. 2, Volume 2D. Appleton and Company, 1880 |
Contents
| 48 | |
| 52 | |
| 53 | |
| 68 | |
| 71 | |
| 81 | |
| 82 | |
| 88 | |
| 91 | |
| 94 | |
| 110 | |
| 121 | |
| 131 | |
| 140 | |
| 146 | |
| 154 | |
| 166 | |
| 213 | |
| 224 | |
| 227 | |
| 230 | |
| 231 | |
| 233 | |
| 246 | |
| 252 | |
| 259 | |
| 270 | |
| 272 | |
| 276 | |
| 277 | |
| 281 | |
| 287 | |
| 291 | |
| 294 | |
Common terms and phrases
acid action air-spark angles apparatus arranged axis battery bismuth bisulphide of carbon caused cells centims centre charged circuit condenser conductor connected copper cylinders dark space deflection diamagnetic diameter difference of potential direction disc discharge distance dynamometer effect electric current electro-motive force electrodes electrometer equal equipotential curves exhaustion experiments Faraday galvanometer glass heat helix inches induction coil insulated intermittent iron length of spark Leyden jar light liquid luminosity luminous column machine magnetic force magnetic potential means measured metal millims mirror molecules negative pole negative terminal number of windings observed obtained pass phenomena Phil phosphorescence piece placed plane of polarization Plate platinum positive terminal pressure produced proper motion quantity radiant matter ratio resistance reversed revolving rheostatic rotation RUE'S screw secondary selenium sensitive shows side Spottiswoode stratification stria striæ STRIE substances sulphate surface tinfoil tion vacuum tube velocity vertical vibrations wire zinc
Popular passages
Page 216 - The magnetic forces do not act on the ray of light directly and without the intervention of matter, but through the mediation of the substance in which they and the ray have a simultaneous existence; the substances and the forces giving to and receiving from each other the power of acting on the light. This is shown by the non-action of a vacuum, of air or gases; and it is also further shown by the special degree in which different matters possess the property. That magnetic force acts upon the ray...
Page 212 - They give the diamagnetic the power of rotating the ray ; and the law of this action on light is, that if a magnetic line of force be going from a north pole or coming from a south pole, along the path of a polarized ray coming to the observer, it will rotate that ray to the right hand ; or, that if such a line of force be coming from a north pole or going from a south pole, it will rotate such a ray to the left hand.
Page 210 - Nichol's eye-piece revolving on a horizontal axis, so as to be easily examined by the latter. Between the polarizing mirror and the eye-piece, two powerful electro-magnetic poles were arranged, being either the poles of a horse-shoe magnet, or the contrary poles of two cylinder magnets ; they were separated from each other about...
Page 122 - It is projected with great velocity from the negative pole, and not only strikes the glass in such a way as to cause it to vibrate and become temporarily luminous while the discharge is going on, but the molecules hammer away with sufficient energy to produce a permanent impression upon the glass.