Chemical News and Journal of Industrial Science, Tomy 103-104Chemical news office., 1911 |
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Strona 12
... substance is exposed for a very short time to the action of light a bright phosphorescence of short duration appears , and its spectrum is almost identical with the fluorescence spectrum . If the exposure to the source of light is ...
... substance is exposed for a very short time to the action of light a bright phosphorescence of short duration appears , and its spectrum is almost identical with the fluorescence spectrum . If the exposure to the source of light is ...
Strona 13
... substance in the residues . He showed ( Zeit . Phys . Chem . , ix . , 1908 , 246 ) that mesothorium is not directly converted into radio - thorium , but that a short - lived inter- mediate product , mesothorium II . , results ( half ...
... substance in the residues . He showed ( Zeit . Phys . Chem . , ix . , 1908 , 246 ) that mesothorium is not directly converted into radio - thorium , but that a short - lived inter- mediate product , mesothorium II . , results ( half ...
Strona 22
... substance . He examined first the products of the emanation or ratio - active gas which diffused out of the thorium compound . This gas , he said , produced an excited activity upon substances which were exposed to its presence , and it ...
... substance . He examined first the products of the emanation or ratio - active gas which diffused out of the thorium compound . This gas , he said , produced an excited activity upon substances which were exposed to its presence , and it ...
Strona 24
... substance C6N2 . salts , more or less soluble in water and insoluble in alcohol and ether . They are stable in the solid state and in neutral solution , but are attacked by strong acids and alkalis , especially on heating . Gases ...
... substance C6N2 . salts , more or less soluble in water and insoluble in alcohol and ether . They are stable in the solid state and in neutral solution , but are attacked by strong acids and alkalis , especially on heating . Gases ...
Strona 56
... substance . As a matter of fact , quinonediphenylimide— Sleeping Sickness . Sir ALEXANDER GEIKIE , K.C.B. , President. Cresol . C = O || C Meta Ortho Para .. 3433 3466 3413 3399 3359 3151 Dihydroxy- benzene . Hydroxy- benzoic acid . 3359 ...
... substance . As a matter of fact , quinonediphenylimide— Sleeping Sickness . Sir ALEXANDER GEIKIE , K.C.B. , President. Cresol . C = O || C Meta Ortho Para .. 3433 3466 3413 3399 3359 3151 Dihydroxy- benzene . Hydroxy- benzoic acid . 3359 ...
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