The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 13
... Thus this law is a direct consequence of the ioniza- tion theory of conductivity , which it therefore confirms . The value of a varies slightly for different gases , its value for air being about 3400 × INTRODUCTION 13.
... Thus this law is a direct consequence of the ioniza- tion theory of conductivity , which it therefore confirms . The value of a varies slightly for different gases , its value for air being about 3400 × INTRODUCTION 13.
Pagina 32
... direct action of the rays will appear dark , whereas the rest of the screen will be fluorescent , and accord- ing as the obstacle interposed is more or less opaque to this particular kind of radiation the shadow cast on the screen will ...
... direct action of the rays will appear dark , whereas the rest of the screen will be fluorescent , and accord- ing as the obstacle interposed is more or less opaque to this particular kind of radiation the shadow cast on the screen will ...
Pagina 47
... direct outcome of the discovery of the Röntgen rays . We have already mentioned that such bodies are said to be radioactive . As has already been pointed out , if the cathode rays are stopped by the glass walls of the tube in which they ...
... direct outcome of the discovery of the Röntgen rays . We have already mentioned that such bodies are said to be radioactive . As has already been pointed out , if the cathode rays are stopped by the glass walls of the tube in which they ...
Pagina 69
... direct chemical analysis and that of 258 obtained by the spec- troscopic method of Runge and Precht . This discrepancy still awaits explanation . In the meantime , however , it would seem best to accept the value obtained by direct ...
... direct chemical analysis and that of 258 obtained by the spec- troscopic method of Runge and Precht . This discrepancy still awaits explanation . In the meantime , however , it would seem best to accept the value obtained by direct ...
Pagina 82
... DIRECT MEASUREMENT OF THE CHARGE CARRIED BY THE a RAYS From the above experiments we may con- clude that the a rays are charged particles whose mass is comparable with the mass of the hydrogen atom , projected with considerable velocity ...
... DIRECT MEASUREMENT OF THE CHARGE CARRIED BY THE a RAYS From the above experiments we may con- clude that the a rays are charged particles whose mass is comparable with the mass of the hydrogen atom , projected with considerable velocity ...
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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