Science and Life: Aberdeen AddressesJ. Murray, 1920 - 229 páginas |
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Página 102
... bismuth is 208 , but the writer was unable to find in a special examination of over 20 kilograms of a certain thorium mineral even a trace of bismuth , though there was 0.3 per cent . of lead . This definitely rules bismuth out . In the ...
... bismuth is 208 , but the writer was unable to find in a special examination of over 20 kilograms of a certain thorium mineral even a trace of bismuth , though there was 0.3 per cent . of lead . This definitely rules bismuth out . In the ...
Página 104
Aberdeen Addresses Frederick Soddy. Gold • · 197.2 Mercury 200.6 Thallium 204.0 Lead 207.2 Bismuth . 208.0 different nuclei . Matter is of indefinitely more kinds than the chemist and his Periodic Law have dis- closed . The places in the ...
Aberdeen Addresses Frederick Soddy. Gold • · 197.2 Mercury 200.6 Thallium 204.0 Lead 207.2 Bismuth . 208.0 different nuclei . Matter is of indefinitely more kinds than the chemist and his Periodic Law have dis- closed . The places in the ...
Página 106
... bismuth , occupying successive places without gaps , as the figure shows . To get gold from mercury , expel from the atom of mercury one B - particle , which will make thallium , then one a - particle , which will turn the thallium into ...
... bismuth , occupying successive places without gaps , as the figure shows . To get gold from mercury , expel from the atom of mercury one B - particle , which will make thallium , then one a - particle , which will turn the thallium into ...
Página 127
... bismuth and tellurium , was characterised as an element of the sulphur family occupying the vacant place contiguous to bismuth . Actinium , by its resemblance in chemical character to the rare earths , and especially to lanthanum ...
... bismuth and tellurium , was characterised as an element of the sulphur family occupying the vacant place contiguous to bismuth . Actinium , by its resemblance in chemical character to the rare earths , and especially to lanthanum ...
Página 130
... bismuth , actinium - D and thorium - D from thallium . RADIOACTIVE Change anD THE PERIODIC LAW . In February , 1913 , K. Fajans in Germany , from electrochemical evidence , and in this country A. S. Russell and I , independently , from ...
... bismuth , actinium - D and thorium - D from thallium . RADIOACTIVE Change anD THE PERIODIC LAW . In February , 1913 , K. Fajans in Germany , from electrochemical evidence , and in this country A. S. Russell and I , independently , from ...
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a-particle actinium active ancient animal 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 complete 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 important inanimate universe investigation ionium isotopes J. J. Thomson knowledge known labour lead living material means mechanism ment million mind minerals modern nation nature original past Periodic Law periodic table philosophy physical pitchblende polonium practical present problem processes Professor progress pure quantity radio-elements radioactive change radium 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