Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 36
... proportion of a revolution through which the celestial globe must be turned in respect to a certain fixed star , in order that we may fix the position of the globe when the body passes the me- ridian ; and by the observations with the ...
... proportion of a revolution through which the celestial globe must be turned in respect to a certain fixed star , in order that we may fix the position of the globe when the body passes the me- ridian ; and by the observations with the ...
Σελίδα 48
... considerably more than iron , in the proportion of 5 to 3 , as nearly as possible . If I arrange the bars in this manner , and choose points G and H in such positions that DG is three - fifths of AG , and FH 48 POPULAR ASTRONOMY .
... considerably more than iron , in the proportion of 5 to 3 , as nearly as possible . If I arrange the bars in this manner , and choose points G and H in such positions that DG is three - fifths of AG , and FH 48 POPULAR ASTRONOMY .
Σελίδα 61
... proportion of the two axes , AA ' , BB ' , of the earth , which would make the proportions of the curvatures at AB and a b , similar to those determined from the observations . It was inferred that they were in a proportion something ...
... proportion of the two axes , AA ' , BB ' , of the earth , which would make the proportions of the curvatures at AB and a b , similar to those determined from the observations . It was inferred that they were in a proportion something ...
Σελίδα 62
... proportion of the axes of the earth , and we are able to try whether all these different measures agree well with the supposition that the earth is a spheroid . There is a quantity of mathema- tical calculations concerned in it ; the ...
... proportion of the axes of the earth , and we are able to try whether all these different measures agree well with the supposition that the earth is a spheroid . There is a quantity of mathema- tical calculations concerned in it ; the ...
Σελίδα 87
... the aid of a micrometer , the equatoreal being to the Polar diameter as 16 to 15 , nearly a proportion which makes the former mea- sure 5000 miles greater than the latter . I then spoke of the apparent movement of the sun LECTURE III . 87.
... the aid of a micrometer , the equatoreal being to the Polar diameter as 16 to 15 , nearly a proportion which makes the former mea- sure 5000 miles greater than the latter . I then spoke of the apparent movement of the sun LECTURE III . 87.
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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