The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 40
... EARTH FIG . 6. Arrangement for measuring current through a gas between two parallel plates by quadrant electrometer . in the gas ( Fig . 6 ) . One of the plates A is connected to one pair of quadrants of the electrometer , the other ...
... EARTH FIG . 6. Arrangement for measuring current through a gas between two parallel plates by quadrant electrometer . in the gas ( Fig . 6 ) . One of the plates A is connected to one pair of quadrants of the electrometer , the other ...
Pagina 41
... earth , the other pair being con- nected to earth by the key K at the beginning of the experiment . On lifting K the current flowing from B to A through the gas causes the quadrants connected with A to charge up and the needle of the ...
... earth , the other pair being con- nected to earth by the key K at the beginning of the experiment . On lifting K the current flowing from B to A through the gas causes the quadrants connected with A to charge up and the needle of the ...
Pagina 42
... EARTH FIG . 7. - Apparatus for measuring current between cylinder and co - axial rod immersed in ionized gas . pole of which is connected with the earth . The vessel and rod are insulated from each other by the ebonite stopper R ...
... EARTH FIG . 7. - Apparatus for measuring current between cylinder and co - axial rod immersed in ionized gas . pole of which is connected with the earth . The vessel and rod are insulated from each other by the ebonite stopper R ...
Pagina 43
... earth . It is of the greatest importance to ob- serve this precaution , as otherwise the electro- meter receives charges by induction from any electrostatic charge near it or its connections and the measurements become quite unreliable ...
... earth . It is of the greatest importance to ob- serve this precaution , as otherwise the electro- meter receives charges by induction from any electrostatic charge near it or its connections and the measurements become quite unreliable ...
Pagina 45
... earth , and the position of L is L A V FIG . 8. - Gold - leaf electroscope for measuring currents produced by radioactive substances . observed through a small window by means of a microscope with a micrometer eye - piece . The rod A is ...
... earth , and the position of L is L A V FIG . 8. - Gold - leaf electroscope for measuring currents produced by radioactive substances . observed through a small window by means of a microscope with a micrometer eye - piece . The rod A is ...
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Termeni și expresii frecvente
absorption actinium active deposit ALPHA RAYS aluminium atomic weight barium Becquerel bismuth Boltwood cathode rays centimetres charge carried charged particles chemical considered contained corpuscles crystals Curie and Danne deflected density detected discovery effect electric field electrolysis electrometer electroscope emana experiments exposed fact fluorescence formed Fourth Edition gases gramme of radium heat helium hydrogen Illustrations insulated ionization J. J. Thomson known light LL.D Madame Curie magnetic field matter measured metals method minerals nature negative ions negatively charged obtained passing phenomena Phil pitchblende polonium present pressure produced properties quantity of emanation quantity of radium radiation emitted radio radioactive bodies radioactive elements radioactive substances radium bromide radium chloride radium emanation radium salt rate of decay removed Röntgen rays Rutherford Rutherford and Soddy seen separated shown solution temperature thorium thorium emanation tion transformed tube uranium velocity vessel weight of radium wire