Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 sider |
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Side 10
... position of the telescope in relation to the axis , the telescope will follow the star from its rising to its setting . And it is the same wherever the star may be , whether near the Pole , ( in which case the telescope is in such a ...
... position of the telescope in relation to the axis , the telescope will follow the star from its rising to its setting . And it is the same wherever the star may be , whether near the Pole , ( in which case the telescope is in such a ...
Side 13
... position of the star we are looking at , and when we trace the course of that star down to the horizon , we find this as the universal fact that though the in- strument be set up as carefully as possible , yet the star is not quite so ...
... position of the star we are looking at , and when we trace the course of that star down to the horizon , we find this as the universal fact that though the in- strument be set up as carefully as possible , yet the star is not quite so ...
Side 14
... position of stars . Figure 4 repre- sents the prism of water we have been looking at . B FIG . 4 . The effect of it is this - a beam of light , coming in the direction of the line AB , does not pursue its original direction , but when ...
... position of stars . Figure 4 repre- sents the prism of water we have been looking at . B FIG . 4 . The effect of it is this - a beam of light , coming in the direction of the line AB , does not pursue its original direction , but when ...
Side 21
... position of the stars , and what are the general principles of fixing that position . There is a term we use in mathematics -co - ordinates ; it is a word not used in common language , and I would avoid it if possible ; but it is ...
... position of the stars , and what are the general principles of fixing that position . There is a term we use in mathematics -co - ordinates ; it is a word not used in common language , and I would avoid it if possible ; but it is ...
Side 22
... position exactly similar on another wall . I might do it in other ways . I might measure the distance AD from the corner A , and the distance ED from the corner E , and describ- ing circles with these sweeps in my compasses from each ...
... position exactly similar on another wall . I might do it in other ways . I might measure the distance AD from the corner A , and the distance ED from the corner E , and describ- ing circles with these sweeps in my compasses from each ...
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Popular Astronomy: A Series of Lectures Delivered at Ipswich George Biddell Airy Uten tilgangsbegrensning - 1868 |
Popular Astronomy: A Series of Lectures Delivered at Ipswich George Biddell Airy Uten tilgangsbegrensning - 1868 |
Vanlige uttrykk og setninger
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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