The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina vii
... POLONIUM RADIATIONS MME . CURIE'S EXPERIMENT ON ABSORPTION BY AIR OF a RAYS MME . CURIE'S EXPERIMENT ON ABSORPTION BY AIR OF a RAYS 87 . · 90 96 • • 15 . 16 . BRAGG'S APPARATUS FOR DETERMINING RANGE OF ALPHA PARTICLES VARIATION OF ...
... POLONIUM RADIATIONS MME . CURIE'S EXPERIMENT ON ABSORPTION BY AIR OF a RAYS MME . CURIE'S EXPERIMENT ON ABSORPTION BY AIR OF a RAYS 87 . · 90 96 • • 15 . 16 . BRAGG'S APPARATUS FOR DETERMINING RANGE OF ALPHA PARTICLES VARIATION OF ...
Pagina 50
... POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural that systematic investigations were made of various minerals known to contain these two elements . Madame Curie first showed that the relative ...
... POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural that systematic investigations were made of various minerals known to contain these two elements . Madame Curie first showed that the relative ...
Pagina 52
... 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 , CXXIX , p . 593 , 1899 ; CXXX , p . 206 , 1900 ...
... 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 , CXXIX , p . 593 , 1899 ; CXXX , p . 206 , 1900 ...
Pagina 54
... polonium and radium . Actinium is also present in this residue . The radium is present as sulphate , which is even less soluble than the corresponding salt of barium . To redissolve the residue it is necessary to free it from sulphuric ...
... polonium and radium . Actinium is also present in this residue . The radium is present as sulphate , which is even less soluble than the corresponding salt of barium . To redissolve the residue it is necessary to free it from sulphuric ...
Pagina 55
... polonium and actinium are found . The former can be pre- cipitated by sulphuretted hydrogen and the latter by ammonia . The residue containing the radium is treated with concentrated sodium carbonate , whereby the barium and radium pass ...
... polonium and actinium are found . The former can be pre- cipitated by sulphuretted hydrogen and the latter by ammonia . The residue containing the radium is treated with concentrated sodium carbonate , whereby the barium and radium pass ...
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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