Nature, Količina 79Sir Norman Lockyer Macmillan Journals Limited, 1908 |
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Stran 206
... radio- active substances contained in the pitchblende have acted photographically upon the plate , while , of course , those portions of the material which are not radio - active have exerted no such action . Thus pitchblende has , as ...
... radio- active substances contained in the pitchblende have acted photographically upon the plate , while , of course , those portions of the material which are not radio - active have exerted no such action . Thus pitchblende has , as ...
Stran 207
Sir Norman Lockyer. adium , which constitute the most important feature of radio - active emission , are only able to penetrate a limited and definite distance into solid materials . They then lose their characteristic properties , if ...
Sir Norman Lockyer. adium , which constitute the most important feature of radio - active emission , are only able to penetrate a limited and definite distance into solid materials . They then lose their characteristic properties , if ...
Stran xxxiii
... Radio - active Substances , Prof. E. Rutherford , F.R.S. , 12 ; Rate of Production of Helium from Radium , Sir James Dewar , F.R.S. , 28 ; Some Properties of the Radium Emanation , Prof. E. Rutherford , 119 ; Apparent Decay of Radium ...
... Radio - active Substances , Prof. E. Rutherford , F.R.S. , 12 ; Rate of Production of Helium from Radium , Sir James Dewar , F.R.S. , 28 ; Some Properties of the Radium Emanation , Prof. E. Rutherford , 119 ; Apparent Decay of Radium ...
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