Science and Life: Aberdeen AdressesE. P. Dutton, 1920 - 229 páginas |
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Página 17
Aberdeen Adresses Frederick Soddy. THE ENERGY OF RADIUM 17 combustion of the same weight ... atom of the radioactive element , which in radioactive changes subdivides or ... atoms out of which they are built -such changes as the explosion of ...
Aberdeen Adresses Frederick Soddy. THE ENERGY OF RADIUM 17 combustion of the same weight ... atom of the radioactive element , which in radioactive changes subdivides or ... atoms out of which they are built -such changes as the explosion of ...
Página 19
... atomic weight and spectrum . For radium , though the proportion in which it exists in the richest uranium mineral is exceedingly minute , it is just possible to obtain enough to weigh and to prepare in a pure condition for chemical ...
... atomic weight and spectrum . For radium , though the proportion in which it exists in the richest uranium mineral is exceedingly minute , it is just possible to obtain enough to weigh and to prepare in a pure condition for chemical ...
Página 20
... atomic changes of the radio - elements , is one that has always been too absurd to call for reply . But for that ... weight of coal , instead of being , as in the case of radium , evolved in the average period of 2500 years , is in the ...
... atomic changes of the radio - elements , is one that has always been too absurd to call for reply . But for that ... weight of coal , instead of being , as in the case of radium , evolved in the average period of 2500 years , is in the ...
Página 90
... atomic weight , possessed a similar property , but , with the doubtful exception of two others , potassium and rubidium , none of the other elements then known show the least evidence of radioactivity . Going back to the natural ...
... atomic weight , possessed a similar property , but , with the doubtful exception of two others , potassium and rubidium , none of the other elements then known show the least evidence of radioactivity . Going back to the natural ...
Página 91
... atomic weight , They found its atomic weight to be 226 , which is next to that of uranium , 238 , and thorium , 232. This and its chemical character put it into a position in the periodic table in the family of the alkaline - earth ...
... atomic weight , They found its atomic weight to be 226 , which is next to that of uranium , 238 , and thorium , 232. This and its chemical character put it into a position in the periodic table in the family of the alkaline - earth ...
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a-particle Aberdeen actinium active æsthetic ancient animal Arts atomic number atomic weight B-ray bismuth branch British Science Guild Carnegie Trust cent century chemical character chemical elements chemist chemistry classical coal commercial education conception creative definite direct discovery disintegration electricity electrons emanation energy evolved existence expelled experimental external Faculty FREDERICK SODDY fundamental H. H. Asquith helium hitherto human ideals inanimate universe investigation ionium isotopes J. J. Thomson knowledge known labour lead living mass material means mechanism ment million mind minerals modern nation nature original past Periodic Law periodic table philosophy physical pitchblende polonium practical present problem processes pure quantity radio-elements radioactive change radium radium-C recognised regard scientific study Scotland Soddy spectroscopic spectrum spirit study and research subjects teaching technical or commercial thallium thought tion to-day transmutation truth ultimate University of Aberdeen uranium and thorium uranium-X wealth whole