Science and Life: Aberdeen AdressesE. P. Dutton, 1920 - 229 páginas |
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Página 18
... known consideration , and so it comes about that each of these successive products has a characteristic average period of life . Its atom remains in existence for a period of time which is , on the average , definite , and which varies ...
... known consideration , and so it comes about that each of these successive products has a characteristic average period of life . Its atom remains in existence for a period of time which is , on the average , definite , and which varies ...
Página 21
... known continuous direction of energy transformations . Such a reversal may well occur under conditions still , and possibly for ever , beyond the power of experiment to reproduce in the laboratory . The dream of the alchemist , the ...
... known continuous direction of energy transformations . Such a reversal may well occur under conditions still , and possibly for ever , beyond the power of experiment to reproduce in the laboratory . The dream of the alchemist , the ...
Página 34
... known to be going on slowly and spontaneously in the radioactive elements . We can at present only watch and follow them . We have not yet succeeded in interfering with them or quickening their rate . RADIOACTIVITY AND TRANSMUTATION 35 ...
... known to be going on slowly and spontaneously in the radioactive elements . We can at present only watch and follow them . We have not yet succeeded in interfering with them or quickening their rate . RADIOACTIVITY AND TRANSMUTATION 35 ...
Página 35
... known to be an evolution of energy nearly a million times as great as has ever been obtained from a similar weight of matter before . The energy is there , but the knowledge of how to liberate it at will and apply it to useful ends is ...
... known to be an evolution of energy nearly a million times as great as has ever been obtained from a similar weight of matter before . The energy is there , but the knowledge of how to liberate it at will and apply it to useful ends is ...
Página 56
... known world expands , the boundaries between the known and the unknown lengthen , jumping - off places for the pioneer into the unknown become more and more numerous , and the pace of progress increases and ever must increase . This ...
... known world expands , the boundaries between the known and the unknown lengthen , jumping - off places for the pioneer into the unknown become more and more numerous , and the pace of progress increases and ever must increase . This ...
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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