Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 11
... produces a degree of friction which prevents further acceleration ; and thus a uniform speed is produced , with very great nicety . This contrivance is in constant use on my Equatoreal at the present time . You will observe it is ...
... produces a degree of friction which prevents further acceleration ; and thus a uniform speed is produced , with very great nicety . This contrivance is in constant use on my Equatoreal at the present time . You will observe it is ...
Σελίδα 13
... produce a spot of light E on the wall . Place in the course of that ray of light a trough F , whose sides are pieces of plate glass . Now pour some water into the trough , and see what effect it produces . You will observe that the ...
... produce a spot of light E on the wall . Place in the course of that ray of light a trough F , whose sides are pieces of plate glass . Now pour some water into the trough , and see what effect it produces . You will observe that the ...
Σελίδα 14
... produced by the refraction of the water . It did not exist before the water was there , but it does exist now that the water is in the trough . I will now show the bearing of this matter on the subject of the disturbance in the position ...
... produced by the refraction of the water . It did not exist before the water was there , but it does exist now that the water is in the trough . I will now show the bearing of this matter on the subject of the disturbance in the position ...
Σελίδα 16
... produces refraction , and that is atmo- spheric air . The common air produces refraction . The visible exhibition of this refraction is one of those nice experiments which I cannot attempt to exhibit to an audience like this . But it ...
... produces refraction , and that is atmo- spheric air . The common air produces refraction . The visible exhibition of this refraction is one of those nice experiments which I cannot attempt to exhibit to an audience like this . But it ...
Σελίδα 18
... produced by the refraction of light by the atmosphere , and applying that as a correction to the observations made by the Equatoreal Instrument , of which I have spoken , it is proved that the whole thing comes quite right — that the ...
... produced by the refraction of light by the atmosphere , and applying that as a correction to the observations made by the Equatoreal Instrument , of which I have spoken , it is proved that the whole thing comes quite right — that the ...
Άλλες εκδόσεις - Προβολή όλων
Popular Astronomy: A Series of Lectures Delivered at Ipswich George Biddell Airy Πλήρης προβολή - 1868 |
Popular Astronomy: A Series of Lectures Delivered at Ipswich George Biddell Airy Πλήρης προβολή - 1868 |
Συχνά εμφανιζόμενοι όροι και φράσεις
aberration of light accurate angle angular distance appear ascertain astronomers ball body bright star calculation Cambridge Cape Cavendish experiment celestial clock cloth College computed Crown 8vo curve described diameter direction disturbed earth earth's axis earth's centre earth's equator ecliptic Edition effect ellipse endeavoured equatoreal exactly explain Fcap Figure fluid globe Greenwich heavens horizon hour inclination Jupiter lecture length lunar precession Mars mean density method millions of miles moon mountain move Mural Circle nearly North Pole nutation object observations Observatory orbit parallax passes the meridian path pendulum perpendicular planets plumb-line point of Aries Polar Star position precession produced proportion pull refraction remark revolve rotation round the sun satellites seen sidereal day solar South Pole spheroid square sun's attraction sun's distance suppose supposition surface tance telescope thing tion transit instrument transit of Venus TREATISE triangle velocity vertical vibrations whole yard measure Zenith Sector
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Σελίδα 285 - HELLENICA; OR, A HISTORY OF GREECE IN GREEK, as related by Diodorus and Thucydides ; being a First Greek Reading Book, with explanatory Notes, Critical and Historical.
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