The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina ix
... difficulty of doing this in a subject in which the results of new and important in- vestigations are being published almost daily . But it is just this circumstance which has prompted the author to undertake the task of writing another ...
... difficulty of doing this in a subject in which the results of new and important in- vestigations are being published almost daily . But it is just this circumstance which has prompted the author to undertake the task of writing another ...
Pagina 11
... current . Although it is a matter of no great difficulty to approxi- mate to saturation ( a potential gradient of 100 volts per cm . is usually sufficient ) , it re- quires a very large potential difference to reach a true INTRODUCTION II.
... current . Although it is a matter of no great difficulty to approxi- mate to saturation ( a potential gradient of 100 volts per cm . is usually sufficient ) , it re- quires a very large potential difference to reach a true INTRODUCTION II.
Pagina 39
... difficulty to get a deflection of the needle of 1 metre for 1 volt difference of potential between the quadrants , on a scale placed at a distance of 1 metre from the instrument , which is a sensitiveness ex- ceedingly difficult to ...
... difficulty to get a deflection of the needle of 1 metre for 1 volt difference of potential between the quadrants , on a scale placed at a distance of 1 metre from the instrument , which is a sensitiveness ex- ceedingly difficult to ...
Pagina 53
... difficulty , par- ticularly as the quantities of the substances to be dealt with are exceedingly minute . The method of procedure adopted by Madame Curie was the following . In the separation of uranium from pitch- blende the first THE ...
... difficulty , par- ticularly as the quantities of the substances to be dealt with are exceedingly minute . The method of procedure adopted by Madame Curie was the following . In the separation of uranium from pitch- blende the first THE ...
Pagina 57
... a metallic state ; for in the first place only very minute quantities of its salts are available and the difficulty of the chemical manipulations to be undertaken are therefore greatly in- creased . In THE DISCOVERY OF RADIO - ACTIVITY 57.
... a metallic state ; for in the first place only very minute quantities of its salts are available and the difficulty of the chemical manipulations to be undertaken are therefore greatly in- creased . In THE DISCOVERY OF RADIO - ACTIVITY 57.
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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