Nature, Količina 93Sir Norman Lockyer Macmillan Journals Limited, 1914 |
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Zadetki 1–3 od 31
Stran 231
... stars of Classes F , G , and K have nearly , if not quite , as small parallaxes and proper - motions as those of Classes A and M , though they are not quite so remote as the stars of Class B. The large mean values obtained for all the stars ...
... stars of Classes F , G , and K have nearly , if not quite , as small parallaxes and proper - motions as those of Classes A and M , though they are not quite so remote as the stars of Class B. The large mean values obtained for all the stars ...
Stran 253
... stars , of Classes B and A , are bright , far exceeding the sun ; and all the very faint stars - for example , those ... class , below which stars of this class are very rare , if they occur at all . Our diagram shows that this ...
... stars , of Classes B and A , are bright , far exceeding the sun ; and all the very faint stars - for example , those ... class , below which stars of this class are very rare , if they occur at all . Our diagram shows that this ...
Stran 282
... stars actually have densities quite as low as any that might be required to explain the great brightness of the reddest giant stars ; and these stars of low density show a very marked preference for the " later " spectral classes ...
... stars actually have densities quite as low as any that might be required to explain the great brightness of the reddest giant stars ; and these stars of low density show a very marked preference for the " later " spectral classes ...
Vsebina
Brauner Prof B New Units in Aerology 136 | 9 |
Brown Prof W Change of Length in Nickel Wire 232 | 17 |
Appleyard Direct Measurement of the Napierian Base 231 | 24 |
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absolute magnitude acid æther appears April Astronomical atomic atomic weight balloon brightness British cent chemical chemistry College colour committee contains density described discussion edition effect electric electrons Engineering expedition experiments fact Funafuti Geological giant stars given gives heat Hermann et Fils illustrated important increase industry interesting investigation J. J. Thomson laboratory large number larvæ lectures lines London magnetic magnitude March matter means measures ment metals Meteorological method motion Museum National Physical Laboratory nature observations Observatory obtained origin paper parallax period photographs physical plants plates present Price problems produced Prof published radiation radium recent rocks ROYAL INSTITUTION Royal Society schools scientific sodium amide solar species spectra spectral classes spectrum stars of Class surface temperature theory tion tube University velocity volume W. H. Bragg