The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina vii
... ATOMIC WEIGHT OF RADIUM BY RUNGE AND PRECHT'S SPECTROSCOPIC METHOD RUTHERFORD'S ARRANGEMENT FOR DEFLECTION OF a RAYS • 40 42 45 • 115 • 67 75 . 11 . RUTHERFORD'S ARRANGEMENT FOR DEFLECTION OF a RAYS • 78 12 . 13 . • 14 . CURVES SHOWING ...
... ATOMIC WEIGHT OF RADIUM BY RUNGE AND PRECHT'S SPECTROSCOPIC METHOD RUTHERFORD'S ARRANGEMENT FOR DEFLECTION OF a RAYS • 40 42 45 • 115 • 67 75 . 11 . RUTHERFORD'S ARRANGEMENT FOR DEFLECTION OF a RAYS • 78 12 . 13 . • 14 . CURVES SHOWING ...
Pagina 58
... atomic weight than any of these elements . Now it is found that the difficulties of isolating the elements of this group grow as the atomic weight increases . Thus metallic strontium is more troublesome to prepare than calcium , and ...
... atomic weight than any of these elements . Now it is found that the difficulties of isolating the elements of this group grow as the atomic weight increases . Thus metallic strontium is more troublesome to prepare than calcium , and ...
Pagina 62
... ATOMIC WEIGHT OF RADIUM The determination of the atomic weight of radium has been the subject of a long and care- ful series of experiments by Madame Curie . The method used was similar to the well - known method used in the case of ...
... ATOMIC WEIGHT OF RADIUM The determination of the atomic weight of radium has been the subject of a long and care- ful series of experiments by Madame Curie . The method used was similar to the well - known method used in the case of ...
Pagina 63
... atomic weight of radium was greater than that of barium . With the purest specimen of radium chloride obtained , which appeared from spectroscopic examination not to contain more than a trace of barium , the value 225 for the atomic ...
... atomic weight of radium was greater than that of barium . With the purest specimen of radium chloride obtained , which appeared from spectroscopic examination not to contain more than a trace of barium , the value 225 for the atomic ...
Pagina 65
... the periodic classification of the elements . Runge and Paschen have shown that in passing down this column the value of d , defined above , F increases in a regular manner as the atomic weight A THE DISCOVERY OF RADIO - ACTIVITY 65.
... the periodic classification of the elements . Runge and Paschen have shown that in passing down this column the value of d , defined above , F increases in a regular manner as the atomic weight A THE DISCOVERY OF RADIO - ACTIVITY 65.
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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