The Encyclopedia Americana: A Library of Universal Knowledge, Količina 23Americana Corporation, 1936 |
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Zadetki 1–3 od 14
Stran 125
... radium D gives out soft beta rays , and is transformed very slowly about half value in 16 vears . The examina- tion of this residue brought to light the very important fact that polonium is a product ... radium or the radium emanation . This.
... radium D gives out soft beta rays , and is transformed very slowly about half value in 16 vears . The examina- tion of this residue brought to light the very important fact that polonium is a product ... radium or the radium emanation . This.
Stran 128
... radium and radium G ( radiolead ) . TABLE MEMBER Symbol Half period Uraniumi .. U2 .... 2 million years . Rays Atomic weight ♡♡ a 88 238 234 234 234 230 U ....... 5 billion years . a Uranium X1 . U X1 . 24.6 days .... Uranium X2 . U ...
... radium and radium G ( radiolead ) . TABLE MEMBER Symbol Half period Uraniumi .. U2 .... 2 million years . Rays Atomic weight ♡♡ a 88 238 234 234 234 230 U ....... 5 billion years . a Uranium X1 . U X1 . 24.6 days .... Uranium X2 . U ...
Stran 129
... RADIUM THERAPY . Twenty years after Madame Curie announced the discovery of radium , and 15 years of experience with its use in treatment of diseased conditions , is long enough to give some idea of its usefulness and its limitations .
... RADIUM THERAPY . Twenty years after Madame Curie announced the discovery of radium , and 15 years of experience with its use in treatment of diseased conditions , is long enough to give some idea of its usefulness and its limitations .
Vsebina
HAUHART WILLIAM F Ph D MIMS EDWIN A M Ph D | 193 |
KRAPP GEORGE PHILIP Ph D PHILLIPS H B Ph D | 342 |
Deceased | 386 |
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