Science and Life: Aberdeen AddressesJ. Murray, 1920 - 229 páginas This work is a collection of addresses and articles written at Aberdeen University regarding the interaction between science and society. |
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Página 19
... radioactivity which , though it is more intense , is more ephemeral . More- over , the quantity of each member of the series , coexisting with its parent , is proportional to its period of life . For it is a balanced or equilibrium ...
... radioactivity which , though it is more intense , is more ephemeral . More- over , the quantity of each member of the series , coexisting with its parent , is proportional to its period of life . For it is a balanced or equilibrium ...
Página 20
... radioactivity might still have been as arresting and magnificent as any discoveries ever were . But without the older knowledge , exquisitely and finely wrought , for the newer knowledge to dovetail into and complete , the chief human ...
... radioactivity might still have been as arresting and magnificent as any discoveries ever were . But without the older knowledge , exquisitely and finely wrought , for the newer knowledge to dovetail into and complete , the chief human ...
Página 34
... 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 Hitherto in the chemical changes , 34 PHYSICAL FORCE.
... 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 Hitherto in the chemical changes , 34 PHYSICAL FORCE.
Página 35
... radioactive elements , has a veritable transmutation of one element into others been observed . We have obtained evidence , in consequence of these new discoveries , that in the atoms of matter exists a store of energy beyond comparison ...
... radioactive elements , has a veritable transmutation of one element into others been observed . We have obtained evidence , in consequence of these new discoveries , that in the atoms of matter exists a store of energy beyond comparison ...
Página 36
... radioactive materials over a period of thousands of millions of years , in as short a time as we pleased . From a pound weight of such substances one would get about as much energy as would be obtained by burning 150 tons of coal . How ...
... radioactive materials over a period of thousands of millions of years , in as short a time as we pleased . From a pound weight of such substances one would get about as much energy as would be obtained by burning 150 tons of coal . How ...
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a-particle Aberdeen actinium active 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 direction 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 religion scientific study Scotland Soddy spectroscopic spectrum spirit study and research subjects successive teaching technical or commercial thallium thought tion to-day transmutation truth ultimate University of Aberdeen uranium and thorium wealth whole