Science and Life: Aberdeen AdressesE. P. Dutton, 1920 - 229 páginas |
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Página 18
... uranium and thorium , each stand , as it were , at the head of a long genealogical table , comprising some fourteen members in the first , and twelve members in the second case , before the processes come to an end and the outflow of ...
... uranium and thorium , each stand , as it were , at the head of a long genealogical table , comprising some fourteen members in the first , and twelve members in the second case , before the processes come to an end and the outflow of ...
Página 19
... uranium mineral is exceedingly minute , it is just possible to obtain enough to weigh and to prepare in a pure condition for chemical examination . The most slowly changing members , on the other hand , are the parent - elements , uranium ...
... uranium mineral is exceedingly minute , it is just possible to obtain enough to weigh and to prepare in a pure condition for chemical examination . The most slowly changing members , on the other hand , are the parent - elements , uranium ...
Página 20
... 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 cosmical calendar . Small as is the ...
... 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 cosmical calendar . Small as is the ...
Página 21
... the earth amongst the most complex sorts of atoms known to the chemist . All heavy elements , presumably , if they could be transmuted artificially into lighter ones , would evolve E energy on the same scale as uranium , thorium and.
... the earth amongst the most complex sorts of atoms known to the chemist . All heavy elements , presumably , if they could be transmuted artificially into lighter ones , would evolve E energy on the same scale as uranium , thorium and.
Página 22
Aberdeen Adresses Frederick Soddy. energy on the same scale as uranium , thorium and radium . Such transmutations are still beyond the power of man to effect , but he would be a bold prophet who would declare for how long a time this may ...
Aberdeen Adresses Frederick Soddy. energy on the same scale as uranium , thorium and radium . Such transmutations are still beyond the power of man to effect , but he would be a bold prophet who would declare for how long a time this may ...
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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