The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 54
... salt of barium . To redissolve the residue it is necessary to free it from sulphuric acid , which is done by boiling with strong caustic soda . By this means a large part of the calcium , aluminium , and lead sulphates is decomposed ...
... salt of barium . To redissolve the residue it is necessary to free it from sulphuric acid , which is done by boiling with strong caustic soda . By this means a large part of the calcium , aluminium , and lead sulphates is decomposed ...
Pagina 57
... salt , it would obviously be of interest to ascertain whether the peculiarities of this remarkable element were in any way changed by obtaining it uncombined , and also to study its chemical and physical properties . Now it might be ...
... salt , it would obviously be of interest to ascertain whether the peculiarities of this remarkable element were in any way changed by obtaining it uncombined , and also to study its chemical and physical properties . Now it might be ...
Pagina 58
... salt is electrolysed under suitable conditions with a cathode of mercury , it is possible to obtain an amalgam with the mercury at the cathode where the metallic radium is separated . When in this state the 1 Coehn , Ber . der Deutsch ...
... salt is electrolysed under suitable conditions with a cathode of mercury , it is possible to obtain an amalgam with the mercury at the cathode where the metallic radium is separated . When in this state the 1 Coehn , Ber . der Deutsch ...
Pagina 59
... salt . POLONIUM For the isolation of polonium Madame Curie adopted the following plan . As we have seen , the polonium is contained in the precipitates with sulphuretted hydrogen in the hydrochloric acid solution obtained during the ...
... salt . POLONIUM For the isolation of polonium Madame Curie adopted the following plan . As we have seen , the polonium is contained in the precipitates with sulphuretted hydrogen in the hydrochloric acid solution obtained during the ...
Pagina 130
... salt mixed with it was frequently more luminous than purer specimens of radium salts . Now , remembering the power of pro- ducing fluorescence which radium exerts upon many crystalline bodies , 130 THE RADIOACTIVE SUBSTANCES.
... salt mixed with it was frequently more luminous than purer specimens of radium salts . Now , remembering the power of pro- ducing fluorescence which radium exerts upon many crystalline bodies , 130 THE RADIOACTIVE SUBSTANCES.
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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