Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 10
... manner . The telescope is directed to any one star , and then by turning the instrument round the axis , it is found , that without any altera- tion in the position of the telescope in relation to the axis , the telescope will follow ...
... manner . The telescope is directed to any one star , and then by turning the instrument round the axis , it is found , that without any altera- tion in the position of the telescope in relation to the axis , the telescope will follow ...
Σελίδα 15
... manner , that at each of these surfaces the direction of the beam of light is bent upwards . Of course you will infer that if the prism were turned in the oppo- D FIG . 5 . site way as at Figure 5 , so that its point was upwards , * The ...
... manner , that at each of these surfaces the direction of the beam of light is bent upwards . Of course you will infer that if the prism were turned in the oppo- D FIG . 5 . site way as at Figure 5 , so that its point was upwards , * The ...
Σελίδα 17
... manner that its direction after it has entered the atmosphere is more nearly perpendicular to the bounding surface than before . Therefore , in conform- ity to that law , it is bent in the direction BC , and it reaches the eye of the ...
... manner that its direction after it has entered the atmosphere is more nearly perpendicular to the bounding surface than before . Therefore , in conform- ity to that law , it is bent in the direction BC , and it reaches the eye of the ...
Σελίδα 18
... manner be bent in the direction cd . The same thing will happen every time it comes to the bound- ary of a new stratum ; and at last , when it reaches the earth's surface at C , its direction will be Cg . The star , instead of appearing ...
... manner be bent in the direction cd . The same thing will happen every time it comes to the bound- ary of a new stratum ; and at last , when it reaches the earth's surface at C , its direction will be Cg . The star , instead of appearing ...
Σελίδα 23
... telescope move in such a manner that the line CDE passing along the telescope , and prolonged to the starry heavens , shall exactly describe a curve resembling the brass meridian . conditions necessary . Consider , now LECTURE I. 23.
... telescope move in such a manner that the line CDE passing along the telescope , and prolonged to the starry heavens , shall exactly describe a curve resembling the brass meridian . conditions necessary . Consider , now LECTURE I. 23.
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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Σελίδα 9 - A GENERAL SURVEY OF THE HISTORY OF THE CANON OF THE NEW TESTAMENT DURING THE fIRST FOUR CENTURIES. Fourth Edition. With Preface on "Supernatural Religion.
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Σελίδα 285 - HELLENICA; OR, A HISTORY OF GREECE IN GREEK, as related by Diodorus and Thucydides ; being a First Greek Reading Book, with explanatory Notes, Critical and Historical.
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