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 18
... Radium is but one of the products of the uranium series , and its special interest is chiefly to be ascribed to the fact that the rate at which it changes , esti- mated as one - two thousand five hundredth part per THE RATE OF CHANGE OF ...
... Radium is but one of the products of the uranium series , and its special interest is chiefly to be ascribed to the fact that the rate at which it changes , esti- mated as one - two thousand five hundredth part per THE RATE OF CHANGE OF ...
Página 19
... radium , though the proportion in which it exists in the richest 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 ...
... radium , though the proportion in which it exists in the richest 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 ...
Página 20
... Radium , no longer a mystery , one of the chemical elements doing what more than a score are doing at their own characteristic rates , owes its peculiar position to the fact that it is changing neither too slowly nor too quickly in ...
... Radium , no longer a mystery , one of the chemical elements doing what more than a score are doing at their own characteristic rates , owes its peculiar position to the fact that it is changing neither too slowly nor too quickly in ...
Página 22
Aberdeen Addresses 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 ...
Aberdeen Addresses 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 ...
Página 34
... radium is extracted , at precisely the same rate as from the radium after it has been extracted , and has been going on for hundreds of millions of years . The explanation follows from the discovery that these radioactive elements are ...
... radium is extracted , at precisely the same rate as from the radium after it has been extracted , and has been going on for hundreds of millions of years . The explanation follows from the discovery that these radioactive elements are ...
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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