Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 5
... north point , through the east point , to the south point ; the term west to denote the whole of the horizon extending from the south point , through the west point , to the north . Now , if we look out on any fine night , the first ...
... north point , through the east point , to the south point ; the term west to denote the whole of the horizon extending from the south point , through the west point , to the north . Now , if we look out on any fine night , the first ...
Σελίδα 6
... north point as the place where it rose in the east . If you select a star that has risen near to the north , it takes a long time in rising to its greatest height , it rises to a higher place in the south , and sets by the same degrees ...
... north point as the place where it rose in the east . If you select a star that has risen near to the north , it takes a long time in rising to its greatest height , it rises to a higher place in the south , and sets by the same degrees ...
Σελίδα 7
... north horizon ; here ( at Ipswich ) it does not , but it passes so near the horizon that it can rarely be seen in the north . Thus , if we fix a straight rod in a certain standard direction , pointing nearly , but not exactly , to the ...
... north horizon ; here ( at Ipswich ) it does not , but it passes so near the horizon that it can rarely be seen in the north . Thus , if we fix a straight rod in a certain standard direction , pointing nearly , but not exactly , to the ...
Σελίδα 8
... north horizon ; that others move round in circles so large that the lower part of these circles is lost , whilst the higher part rises above the horizon . It is of import- ance that anybody , who wishes to understand Astronomy ...
... north horizon ; that others move round in circles so large that the lower part of these circles is lost , whilst the higher part rises above the horizon . It is of import- ance that anybody , who wishes to understand Astronomy ...
Σελίδα 24
... North FIG . 9 . acquainted with the celestial globe , knows that the brass meridian ought to be perpendicular to the horizon ; for securing that condition in the curve described by the transit instrument , the two points AB must be ...
... North FIG . 9 . acquainted with the celestial globe , knows that the brass meridian ought to be perpendicular to the horizon ; for securing that condition in the curve described by the transit instrument , the two points AB must be ...
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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