Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 11
... clock , though the move- ment from day to day , from hour to hour , and from minute to minute , is uniform , yet it is not so with the smaller divisions of seconds : the clock works with jerks , and does not go uniformly . Now the ...
... clock , though the move- ment from day to day , from hour to hour , and from minute to minute , is uniform , yet it is not so with the smaller divisions of seconds : the clock works with jerks , and does not go uniformly . Now the ...
Σελίδα 12
... clock work which I now exhibit is borrowed from a private Observatory — from the Observatory of Dr. Lee . A spindle KL from this apparatus is attached to the worm which carries the Equatoreal . It makes the telescope of the Equatoreal ...
... clock work which I now exhibit is borrowed from a private Observatory — from the Observatory of Dr. Lee . A spindle KL from this apparatus is attached to the worm which carries the Equatoreal . It makes the telescope of the Equatoreal ...
Σελίδα 25
... clock . The clock should go well , and should beat loudly and distinctly . The astronomer We observes the Polar Star when it passes the transit instrument LECTURE I. 25 25.
... clock . The clock should go well , and should beat loudly and distinctly . The astronomer We observes the Polar Star when it passes the transit instrument LECTURE I. 25 25.
Σελίδα 26
... clock is going all the time . A star is seen to be approaching the meridian : the observer directs the telescope so ... clock face for the hours and minutes , and he then listens to the clock , which beats 26 POPULAR ASTRONOMY .
... clock is going all the time . A star is seen to be approaching the meridian : the observer directs the telescope so ... clock face for the hours and minutes , and he then listens to the clock , which beats 26 POPULAR ASTRONOMY .
Σελίδα 27
... clock , which beats seconds in that manner he gets the hour , the minute , the second , and the fraction of a second , at which that bright star passes every wire , and by taking the mean or average of these , he finds the time at which ...
... clock , which beats seconds in that manner he gets the hour , the minute , the second , and the fraction of a second , at which that bright star passes every wire , and by taking the mean or average of these , he finds the time at which ...
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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