Nature, Količina 80Sir Norman Lockyer Macmillan Journals Limited, 1909 |
Iz vsebine knjige
Zadetki 1–3 od 11
Stran 7
... radium [ A ( cm . ) - 1 = from 0-57 to 0-46 over a range of from 0-64 cm ... bromide contained in a sealed thin glass tube . The luminosity could be ... radium bromide after passage through 2.5 cm . of lead by means of an electroscope ...
... radium [ A ( cm . ) - 1 = from 0-57 to 0-46 over a range of from 0-64 cm ... bromide contained in a sealed thin glass tube . The luminosity could be ... radium bromide after passage through 2.5 cm . of lead by means of an electroscope ...
Stran xviii
... RADIUM ( As devised by Sir WILLIAM CROOKES ) . Price 15 / - . Post free anywhere . The scintillations seen in this instrument are from Pure Radium Bromide of highest known activity , and are brighter and more plentiful than those ...
... RADIUM ( As devised by Sir WILLIAM CROOKES ) . Price 15 / - . Post free anywhere . The scintillations seen in this instrument are from Pure Radium Bromide of highest known activity , and are brighter and more plentiful than those ...
Stran 177
... radium bromide is the ' most effective of all . Accord- ingly , tubes containing the mixture of not very dry hydrogen and nitrous oxide were prepared . One contained a little lime , a second some thoria , and a third some radium bromide ...
... radium bromide is the ' most effective of all . Accord- ingly , tubes containing the mixture of not very dry hydrogen and nitrous oxide were prepared . One contained a little lime , a second some thoria , and a third some radium bromide ...
Vsebina
KNOWLEDGE | 1 |
Crucibles Scrap Utensils Wire Foil Residues c | xvii |
and oil immersion obje tives all in brand new condition price 25 | xxvii |
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Agriculture apparatus application April Arthur Gamgee astronomical B.Sc Botany British carbon Catalogue cent chemical Chemistry College coloured contains course Crown 8vo D.Sc deal discussed edition electric elementary engine experimental experiments Franco-British Exhibition gases Geology give given heat hydrogen illustrated important inches insects Institution instruments interesting J. J. Thomson Karl Pearson laboratory large number larva lectures London magnetic Makers March Mathematics ment Messrs method microscope Museum National Physical Laboratory observations Observatory obtained Orthoptera oxygen paper photographs physical physiology plants plates Poldhu post free practical present pressure Price produced Prof Professor published radiation radio-active radium radium bromide recent reference regard schools scientific secondary species specimens steam Street structure technical temperature text-books theory thorium tion tube University University of London velocity Victoria Land volume Zoology