The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 50
... separated from it by precipitating barium sulphate from a solution containing thorium . RADIOACTIVE MINERALS AND THE DISCOVERY OF RADIUM , POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural ...
... separated from it by precipitating barium sulphate from a solution containing thorium . RADIOACTIVE MINERALS AND THE DISCOVERY OF RADIUM , POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural ...
Pagina 52
... separation . of two new radioactive elements , polonium and radium . A third radioactive element , actinium , was subsequently isolated from pitch- blende by Debierne.1 The method of procedure in separating 1 Debierne , Comptes Rendus ...
... separation . of two new radioactive elements , polonium and radium . A third radioactive element , actinium , was subsequently isolated from pitch- blende by Debierne.1 The method of procedure in separating 1 Debierne , Comptes Rendus ...
Pagina 53
... separation which showed the greatest radio - activity being reserved for further treat- ment ; in fact , the method was one of ordinary chemical fractionation in which the usual chemical tests were replaced by measurements with an ...
... separation which showed the greatest radio - activity being reserved for further treat- ment ; in fact , the method was one of ordinary chemical fractionation in which the usual chemical tests were replaced by measurements with an ...
Pagina 54
Their Properties and Behaviour Walter Makower. In the separation of uranium from pitch- blende the first process ... separated . The resi- due consists chiefly of sulphates of lead and calcium mixed with silica , alumina and oxide of ...
Their Properties and Behaviour Walter Makower. In the separation of uranium from pitch- blende the first process ... separated . The resi- due consists chiefly of sulphates of lead and calcium mixed with silica , alumina and oxide of ...
Pagina 55
... by boiling with sodium carbonate and again converted into chlorides . A small quantity of polonium can now again be separated by sulphuretted hydrogen . The solution is treated successively with chlorine THE DISCOVERY OF RADIO - ACTIVITY ...
... by boiling with sodium carbonate and again converted into chlorides . A small quantity of polonium can now again be separated by sulphuretted hydrogen . The solution is treated successively with chlorine THE DISCOVERY OF RADIO - ACTIVITY ...
Alte ediții - Afișează-le pe toate
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