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 95
... active radio - elements she discovered in such infinitesimal amount in pitchblende were in all probability the products of the change of the parent element uranium . The view carries with it the corollary that , if you separated uranium ...
... active radio - elements she discovered in such infinitesimal amount in pitchblende were in all probability the products of the change of the parent element uranium . The view carries with it the corollary that , if you separated uranium ...
Página 112
... ACTIVE CHANGE . If a chemist were to purify an element , say lead from silver , and found , on re - examining the lead at a later date , that silver was still present , and , again and again repeating the process , found always that ...
... ACTIVE CHANGE . If a chemist were to purify an element , say lead from silver , and found , on re - examining the lead at a later date , that silver was still present , and , again and again repeating the process , found always that ...
Página 113
... active deposit , in which the successive products , called thorium - A , -B , -C , and -D , are now recognised . The false interpretation of a similar phenomenon in the case of radium , before the radium emanation had been recognised ...
... active deposit , in which the successive products , called thorium - A , -B , -C , and -D , are now recognised . The false interpretation of a similar phenomenon in the case of radium , before the radium emanation had been recognised ...
Página 122
... active elements which at present are beyond experi- mental means of detection . PERIOD OF AVERAGE LIFE . The law of radioactive change , which is the same for all cases , is that of unimolecular reaction , the rate of change , or ...
... active elements which at present are beyond experi- mental means of detection . PERIOD OF AVERAGE LIFE . The law of radioactive change , which is the same for all cases , is that of unimolecular reaction , the rate of change , or ...
Página 127
... active character , by its disintegration in definite and characteristic ways at definite and characteristic rates , no further chemically new elements were discovered . Unique radioactive character does not always , as it did with ...
... active character , by its disintegration in definite and characteristic ways at definite and characteristic rates , no further chemically new elements were discovered . Unique radioactive character does not always , as it did with ...
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Términos y frases comunes
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