Popular Astronomy: A Series of Lectures Delivered at IpswichMacmillan, 1868 - 292 σελίδες |
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Σελίδα 17
... of uniform density through- out , the ray AB falling on the boundary BD of the upper- most stratum will be bent in the direction Bc , so as to be more nearly perpendicular to In this manner we find there is a rational explana- LECTURE I.
... of uniform density through- out , the ray AB falling on the boundary BD of the upper- most stratum will be bent in the direction Bc , so as to be more nearly perpendicular to In this manner we find there is a rational explana- LECTURE I.
Σελίδα 44
... falls on a surface of glass , it is bent there in such a manner as to go more square to the surface . I had occasion in the last lecture to mention strongly my disapproval of the use of some words in a wrong sense . I shall now mention ...
... falls on a surface of glass , it is bent there in such a manner as to go more square to the surface . I had occasion in the last lecture to mention strongly my disapproval of the use of some words in a wrong sense . I shall now mention ...
Σελίδα 78
... falling ? It is its rotation . I cannot now enter upon an explanation of this , which is one of the most complicated subjects in mechanics . Another thing pertinent to the question before us , is the motion of a quoit . Everbody who ...
... falling ? It is its rotation . I cannot now enter upon an explanation of this , which is one of the most complicated subjects in mechanics . Another thing pertinent to the question before us , is the motion of a quoit . Everbody who ...
Σελίδα 83
... fall over the point G of the arc ; but if we carry the Zenith Sector to B , and turn the telescope to the same star , the plumb - line will fall on the point g of the arc . Inasmuch , therefore , as the telescope , from being directed ...
... fall over the point G of the arc ; but if we carry the Zenith Sector to B , and turn the telescope to the same star , the plumb - line will fall on the point g of the arc . Inasmuch , therefore , as the telescope , from being directed ...
Σελίδα 103
... , or like a stone thrown horizontally , you will observe that it begins to curve in its path , under the attrac- tion of gravity , and it falls to the ground . The second law of motion is , that the force of LECTURE III . 103.
... , or like a stone thrown horizontally , you will observe that it begins to curve in its path , under the attrac- tion of gravity , and it falls to the ground . The second law of motion is , that the force of LECTURE III . 103.
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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