The Stars: A Study of the Universe |
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Page 291
... motions are to be resolved that of the parallactic motion and that at right angles . to it . That is to say , taking the solar apex as a pole , we conceive an arc of a great circle drawn upon the celestial sphere from it to the star ...
... motions are to be resolved that of the parallactic motion and that at right angles . to it . That is to say , taking the solar apex as a pole , we conceive an arc of a great circle drawn upon the celestial sphere from it to the star ...
Page 295
A Study of the Universe Simon Newcomb. seem to be moving with its parallactic motion in the direction S B , away from ... apical motion , in the direction S B , and its cross - motion in the direction S. The apical motion consists of two ...
A Study of the Universe Simon Newcomb. seem to be moving with its parallactic motion in the direction S B , away from ... apical motion , in the direction S B , and its cross - motion in the direction S. The apical motion consists of two ...
Page 296
... motions of a great number of stars at some distance from the solar apex , so that their parallactic motion shall be observable . Stumpe and Ristenpart , the German astronomers , as well as Kapteyn , have considered the relation between ...
... motions of a great number of stars at some distance from the solar apex , so that their parallactic motion shall be observable . Stumpe and Ristenpart , the German astronomers , as well as Kapteyn , have considered the relation between ...
Page 298
... apical motion may be that of the star itself , and how much the parallactic motion arising from the motion of the earth . What we have done is to assume that in the case of a great number of stars the actual apical motions will be equal ...
... apical motion may be that of the star itself , and how much the parallactic motion arising from the motion of the earth . What we have done is to assume that in the case of a great number of stars the actual apical motions will be equal ...
Page 299
... that the average value of either component will be less than that of the projected motion . The components may be the motions in right ascension or declination , or the apical motion and the motion AVERAGE speed of A STAR 299.
... that the average value of either component will be less than that of the projected motion . The components may be the motions in right ascension or declination , or the apical motion and the motion AVERAGE speed of A STAR 299.
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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...