The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 18
... solution , we know that 96,000 coulombs , or roughly 10 * electromagnetic units , liberate 1 gramme of hydrogen at normal tem- perature and pressure , and this amount of gas occupies 11.2 litres . Hence 1 electro- magnetic unit ...
... solution , we know that 96,000 coulombs , or roughly 10 * electromagnetic units , liberate 1 gramme of hydrogen at normal tem- perature and pressure , and this amount of gas occupies 11.2 litres . Hence 1 electro- magnetic unit ...
Pagina 50
... solution containing thorium . RADIOACTIVE MINERALS AND THE DISCOVERY OF RADIUM , POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural that systematic investigations were made of various minerals ...
... solution containing thorium . RADIOACTIVE MINERALS AND THE DISCOVERY OF RADIUM , POLONIUM , AND ACTINIUM Two radioactive elements having been dis- covered it is not unnatural that systematic investigations were made of various minerals ...
Pagina 54
... means a large part of the calcium , aluminium , and lead sulphates is decomposed , and at the same time alumina , silica , and lead pass into solution . After washing the residue with water 54 THE RADIOACTIVE SUBSTANCES.
... means a large part of the calcium , aluminium , and lead sulphates is decomposed , and at the same time alumina , silica , and lead pass into solution . After washing the residue with water 54 THE RADIOACTIVE SUBSTANCES.
Pagina 55
... solution the new elements polonium and actinium are found . The former can be pre- cipitated by sulphuretted ... solution as carbonates , which after being carefully washed are converted into chlorides by means of hydrochloric acid . The ...
... solution the new elements polonium and actinium are found . The former can be pre- cipitated by sulphuretted ... solution as carbonates , which after being carefully washed are converted into chlorides by means of hydrochloric acid . The ...
Pagina 56
... solution is evaporated to dryness and the residue washed with strong hydro- chloric acid . The calcium chloride is dissolved and a mixture of barium and radium chlorides is left behind . To obtain 60 kilogrammes of this mixture it was ...
... solution is evaporated to dryness and the residue washed with strong hydro- chloric acid . The calcium chloride is dissolved and a mixture of barium and radium chlorides is left behind . To obtain 60 kilogrammes of this mixture it was ...
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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