Science and Life: Aberdeen AdressesE. P. Dutton, 1920 - 229 páginas |
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Página 8
... period . One may believe that the human aspect of learn- ing , if it is the highest , is also the last aspect to be achieved , and if no adequate appreciation of the older humanities can be arrived at without long prepara- tion in the ...
... period . One may believe that the human aspect of learn- ing , if it is the highest , is also the last aspect to be achieved , and if no adequate appreciation of the older humanities can be arrived at without long prepara- tion in the ...
Página 18
... period of time which is , on the average , definite , and which varies among the various successive members between ... periods which exceed those covered even by the utmost estimates of the duration of geological time . Radium is but ...
... period of time which is , on the average , definite , and which varies among the various successive members between ... periods which exceed those covered even by the utmost estimates of the duration of geological time . Radium is but ...
Página 19
... periods of time it is imperceptible , and yet so rapid that the amount of energy continuously evolved is ... period of life . For it is a balanced or equilibrium quantity , when the rate of formation equals the rate of change ...
... periods of time it is imperceptible , and yet so rapid that the amount of energy continuously evolved is ... period of life . For it is a balanced or equilibrium quantity , when the rate of formation equals the rate of change ...
Página 20
... period of 2500 years , is in the case of uranium and thorium spread over a term of thousands of millions of years . The effects are small but enduring , and , almost imperceptible in themselves , come to maturity in due time in the ...
... period of 2500 years , is in the case of uranium and thorium spread over a term of thousands of millions of years . The effects are small but enduring , and , almost imperceptible in themselves , come to maturity in due time in the ...
Página 33
... period , without long ago having become bankrupt ? The sun and stars do not burn coal . Even if they did , Lord Kelvin computed that the combustion of a mass of coal the size of the sun would only suffice for 5000 years of the present ...
... period , without long ago having become bankrupt ? The sun and stars do not burn coal . Even if they did , Lord Kelvin computed that the combustion of a mass of coal the size of the sun would only suffice for 5000 years of the present ...
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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