The Technical World, Volume 1American school of correspondence at Armour Institute of Technology, 1904 |
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Page 2
... fact , he succeeded in obtaining in this way a radiograph of a metallic object , similar in all respects to the pictures which Röntgen had obtained with the X - rays . This demonstrated , first , that the fluor- escent light had nothing ...
... fact , he succeeded in obtaining in this way a radiograph of a metallic object , similar in all respects to the pictures which Röntgen had obtained with the X - rays . This demonstrated , first , that the fluor- escent light had nothing ...
Page 3
... fact , Röntgen was experimenting upon them when he made the discovery of X - rays . Figure I will give some idea of how these rays manifest themselves . If A and B are two diaphragms in the middle of which are two horizontal slits ...
... fact , Röntgen was experimenting upon them when he made the discovery of X - rays . Figure I will give some idea of how these rays manifest themselves . If A and B are two diaphragms in the middle of which are two horizontal slits ...
Page 5
... fact that they are not ordinarily deflected either by a magnet or by an electrically charged body . Rutherford named these rays the Alpha rays , while he designated the cathode rays emitted by radio - active substances as the Beta rays ...
... fact that they are not ordinarily deflected either by a magnet or by an electrically charged body . Rutherford named these rays the Alpha rays , while he designated the cathode rays emitted by radio - active substances as the Beta rays ...
Page 8
... fact to be noted is that uranium , thorium , and radium , the three permanently radio - active substances thus far discovered , and the only ones which can with certainty be classed as elements , are the substances whose atoms are the ...
... fact to be noted is that uranium , thorium , and radium , the three permanently radio - active substances thus far discovered , and the only ones which can with certainty be classed as elements , are the substances whose atoms are the ...
Page 10
... fact that radium now exists on the earth , taken in connection with the fact that the life of radium is short in comparison with the past ages of the earth's existence , certainly seems to point to an affirmative answer . Subatomic ...
... fact that radium now exists on the earth , taken in connection with the fact that the life of radium is short in comparison with the past ages of the earth's existence , certainly seems to point to an affirmative answer . Subatomic ...
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