The System of the Stars |
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Page 1
... increased area of the heavens displayed in low latitudes , are due to the multitude of small stars always , it might be said , hovering on the verge of visibility . If , indeed , the atmosphere could be wholly withdrawn , fully 25,000 ...
... increased area of the heavens displayed in low latitudes , are due to the multitude of small stars always , it might be said , hovering on the verge of visibility . If , indeed , the atmosphere could be wholly withdrawn , fully 25,000 ...
Page 3
... increased . Thus magnitude ' has nothing to do with apparent size , but refers entirely to apparent lustre , which depends upon distance and intensity of shining , as well as upon real dimensions . The faintest stars have the highest ...
... increased . Thus magnitude ' has nothing to do with apparent size , but refers entirely to apparent lustre , which depends upon distance and intensity of shining , as well as upon real dimensions . The faintest stars have the highest ...
Page 6
... increases so markedly as to serve for a useful prognostic of rain . Hurricanes and cyclones are still more emphatically announced by it , and it is extremely sensitive to magnetic disturbances . Ussher was struck in the last century ...
... increases so markedly as to serve for a useful prognostic of rain . Hurricanes and cyclones are still more emphatically announced by it , and it is extremely sensitive to magnetic disturbances . Ussher was struck in the last century ...
Page 13
... increase steadily year by year , apart from any move- ments ' proper ' to themselves . The diurnal revolution of the sphere furnishes the sole standard of time in sidereal astronomy . Sidereal noon at each spot on the earth is the ...
... increase steadily year by year , apart from any move- ments ' proper ' to themselves . The diurnal revolution of the sphere furnishes the sole standard of time in sidereal astronomy . Sidereal noon at each spot on the earth is the ...
Page 19
... increase of the square of the distance , is universally familiar . If all the stars were equal in themselves , their apparent differences would thus at once disclose their relative remoteness . We could locate them in space just as ...
... increase of the square of the distance , is universally familiar . If all the stars were equal in themselves , their apparent differences would thus at once disclose their relative remoteness . We could locate them in space just as ...
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Common terms and phrases
61 Cygni 70 Ophiuchi absorption Aldebaran Algol Andromeda Andromeda nebula appear Arcturus Argûs Astr astronomy atmospheric bands Betelgeux blue bodies bright lines brilliant Cassiopeia Catalogue centre century cluster colour comets condensation Cygni dark detected distance double stars effect extent faint galactic Harvard heavens heliometer hence Huggins hydrogen hydrogen lines Ibid interval less light Lockyer luminous lustre Lyræ magnitude star mass maximum measured ment miles Milky Mira Monthly Notices movements nearly nebula ninth magnitude objects observations Observatory Ophiuchus orbit Orion Orion nebula pair parallax peculiarities period Phil photographic photosphere planetary plates Pleiades present Professor proper motion rays red stars refractor remarkable remote satellite Schjellerup seems sidereal Sir John Herschel Sirian Sirius sixth magnitude small stars solar southern space spectra spectroscopic spectrum stellar Struve sun's telescope tion Trans variable stars velocity visible visual Vogel yellow
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