The Stars: A Study of the Universe |
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Page 5
... direction was that of Captain James M. Gilliss , who , in 1849 , organised an astronomical expedition to Chili . The principal motive of this enterprise was the determina- tion of the solar parallax by observations upon Venus and Mars ...
... direction was that of Captain James M. Gilliss , who , in 1849 , organised an astronomical expedition to Chili . The principal motive of this enterprise was the determina- tion of the solar parallax by observations upon Venus and Mars ...
Page 10
... direction was taken by Bond at Harvard . The next great advance was made by Rutherfurd of New York , who photographed clusters of stars and used the plates in determining the positions of the individual bodies of the cluster . When more ...
... direction was taken by Bond at Harvard . The next great advance was made by Rutherfurd of New York , who photographed clusters of stars and used the plates in determining the positions of the individual bodies of the cluster . When more ...
Page 14
... direction in which it is mov- ing , and the character of its spectral lines , how much wiser are we ? What could hardly have been foreseen fifty years ago , is that these various classes of results are now made to combine and converge ...
... direction in which it is mov- ing , and the character of its spectral lines , how much wiser are we ? What could hardly have been foreseen fifty years ago , is that these various classes of results are now made to combine and converge ...
Page 25
... directions so that to every apparent brightness there will be a certain mag- nitude . For example , if we assign the magnitude 1.0 to a certain star , taken as a standard , which would formerly have been called a star of the first THE ...
... directions so that to every apparent brightness there will be a certain mag- nitude . For example , if we assign the magnitude 1.0 to a certain star , taken as a standard , which would formerly have been called a star of the first THE ...
Page 31
... direction on the celestial sphere . They were so drawn that the smallest possible change should be made in the notation of the conspicuous . stars ; that is , the rule was that , if possible , each bright star should be in the same ...
... direction on the celestial sphere . They were so drawn that the smallest possible change should be made in the notation of the conspicuous . stars ; that is , the rule was that , if possible , each bright star should be in the same ...
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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...