Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 sider |
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Side 54
... earth is something curved . Again , people have sailed round the earth . This was done for the first time by Magellan and his successors in command : and for the second time by Sir Francis Drake . From the time of Sir Francis Drake ...
... earth is something curved . Again , people have sailed round the earth . This was done for the first time by Magellan and his successors in command : and for the second time by Sir Francis Drake . From the time of Sir Francis Drake ...
Side 57
... earth . In the way that I have described I have the inclination between the line , which is perpendicular to the sur ... earth's surface . If the earth be spherical or round , it is plain that these lines come to the earth's centre , and ...
... earth . In the way that I have described I have the inclination between the line , which is perpendicular to the sur ... earth's surface . If the earth be spherical or round , it is plain that these lines come to the earth's centre , and ...
Side 60
... earth , supposing it to be a sphere , would depend on the distance you have to go , in order that the direction of the vertical might be altered by one degree . We have to go further in the northern measure than in the equatorial ...
... earth , supposing it to be a sphere , would depend on the distance you have to go , in order that the direction of the vertical might be altered by one degree . We have to go further in the northern measure than in the equatorial ...
Side 62
... earth . There is also one measure which is worth mentioning , on account of the extraordinary times in which it was ... earth , and we are able to try whether all these different measures agree well with the supposition that the earth is ...
... earth . There is also one measure which is worth mentioning , on account of the extraordinary times in which it was ... earth , and we are able to try whether all these different measures agree well with the supposition that the earth is ...
Side 66
... earth is a spheroid , with a shorter axis of 41,707,600 feet , and a larger axis of 41,847,400 feet , and it is found to correspond well . By means , then , of meridional measures by triangu- lation , and the Zenith Sector , and by ...
... earth is a spheroid , with a shorter axis of 41,707,600 feet , and a larger axis of 41,847,400 feet , and it is found to correspond well . By means , then , of meridional measures by triangu- lation , and the Zenith Sector , and by ...
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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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