The Stars: A Study of the Universe |
From inside the book
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Page 16
... actual amount of light that the various stars send to us , or their apparent brilliancy , without regard to their distance or actual brilliancy . The ancient astronomers divided all the stars they could see into six classes , the number ...
... actual amount of light that the various stars send to us , or their apparent brilliancy , without regard to their distance or actual brilliancy . The ancient astronomers divided all the stars they could see into six classes , the number ...
Page 18
... actual amount of light corresponding to the Magnitude . different magnitudes varied nearly in geo- metrical progression from one magnitude to another , a conclusion which accords with the well - known psy- chological law that the ...
... actual amount of light corresponding to the Magnitude . different magnitudes varied nearly in geo- metrical progression from one magnitude to another , a conclusion which accords with the well - known psy- chological law that the ...
Page 27
... actual distance of the sun in order that it might shine as a star of the corresponding magnitude . These numbers and the corresponding parallax are as follows : Sirius ; Distance 100,000 : Parallax = 2 " .06 66 66 Mag . I 302,000 : o ...
... actual distance of the sun in order that it might shine as a star of the corresponding magnitude . These numbers and the corresponding parallax are as follows : Sirius ; Distance 100,000 : Parallax = 2 " .06 66 66 Mag . I 302,000 : o ...
Page 40
... actual angle which this meridian . makes with the prime meridian is the right ascension of the star , as the corresponding angle is the longi- tude of the city on the earth's surface . There is , however , a difference in the unit of ...
... actual angle which this meridian . makes with the prime meridian is the right ascension of the star , as the corresponding angle is the longi- tude of the city on the earth's surface . There is , however , a difference in the unit of ...
Page 42
... actual number of stars which it contains is 1030 . The positions of these are given in longitude and latitude , and are also described by their places in the figure of the constellation to which each may belong . Not unfrequently the ...
... actual number of stars which it contains is 1030 . The positions of these are given in longitude and latitude , and are also described by their places in the figure of the constellation to which each may belong . Not unfrequently the ...
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Common terms and phrases
actual Algol apical motion appear Aquila astronomers average Beta Lyræ binary systems body bright lines brighter stars brightest brilliancy catalogue celestial sphere centre century chapter cluster colour components conclusion constellation dark lines density determined direction distance double stars earth eclipses emitted equal Eta Aquila fact faint fainter follows galaxy greater Harvard Observatory heavens Herschel hydrogen hydrogen lines increase Kapteyn latter less Lick Observatory limit lucid stars mass measured Milky naked eye nearly nebula number of stars observations Observatory orbit Orion parallactic motion parallax period photographic Pickering planet pole position proper motion question R. A. Dec radial motion ratio remarkable revolving round right ascension seems seen Sirius sixth magnitude solar apex space spectra spectroscope spectroscopic binary spectrum square degrees star-density stellar supposed surface telescope temperature tion tude UNIVERS universe variable stars variation velocity visible wave-length zone
Popular passages
Page 284 - How charming is divine Philosophy! Not harsh and crabbed, as dull fools suppose, But musical as is Apollo's lute, And a perpetual feast of nectared sweets, Where no crude surfeit reigns.
Page 224 - Tis ours to trace him only in our own. He, who through vast immensity can pierce, See worlds on worlds compose one universe, Observe how system into system runs, What other planets circle other suns, What varied being peoples every star, May tell why Heaven has made us as we are.
Page 333 - The book is cleverly written and is one of the best works of its kind ever put before the public. It will be interesting to all readers, and especially to those interested in the study of science.
Page 26 - Now came still evening on, and twilight grey Had in her sober livery all things clad; Silence accompanied; for beast and bird, They to their grassy couch, these to their nests Were slunk, all but the wakeful nightingale ; She all night long her amorous descant sung , Silence was...
Page 121 - It may be glorious to write Thoughts that shall glad the two or three High souls, like those far stars that come in sight Once in a century ; — But better far it is to speak One simple word, which now and then Shall waken their free nature in the weak And friendless sons of men...
Page 262 - To God's eternal house direct the way A broad and ample road, whose dust is gold, And pavement stars...