Nature, Količina 103Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Zadetki 1–3 od 90
Stran 26
... period of a star , or of a group of stars , in the galactic system is probably not less than 1010 years nearly a thousand times longer than the interval during which the Helmholtz - Kelvin contraction , ac- cording to current ...
... period of a star , or of a group of stars , in the galactic system is probably not less than 1010 years nearly a thousand times longer than the interval during which the Helmholtz - Kelvin contraction , ac- cording to current ...
Stran 338
... period of fifty - seven years ( 1862-1918 ) . The variations in rainfall in England are so great that any seasonal period can be detected only by the study of many years ' statistics . Even when the statistics are available for a long ...
... period of fifty - seven years ( 1862-1918 ) . The variations in rainfall in England are so great that any seasonal period can be detected only by the study of many years ' statistics . Even when the statistics are available for a long ...
Stran 495
... period 1898-19 in centimetres per annum . metres . As good , or even better , agreement is shown between stations in the Baltic and Amsterdam , making use of the Dutch as well as the German levellings . In short , Prof. Witting has good ...
... period 1898-19 in centimetres per annum . metres . As good , or even better , agreement is shown between stations in the Baltic and Amsterdam , making use of the Dutch as well as the German levellings . In short , Prof. Witting has good ...
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acid aeroplane Agriculture airship apparatus appears application appointed April Astronomical atomic weight British cent chemical chemistry chemists cholera College colour Committee Council dealing Department direction edition electrical engineering experiments fact favourable German given gives glass Government Hardstoft important India industry instruments interest investigation J. J. Thomson June laboratory larvæ lecture light London London plane Lord Rayleigh magnetic manufacture March means measure ment Meteorological method Museum National National Physical Laboratory NATURE observations Observatory obtained Office optical organisation paper physical plaice plant possible practical present president problems production Prof published radiation radio-active recent records refractive index Robert Hadfield ROVAL ROYAL INSTITUTION Royal Society schools scientific species stars stations technical temperature theory tion University various W. H. Bragg weather wireless