An exposition of the nature, force, action, and other properties of gravitation on the planets [by J. Denison].Whittaker and Company, Ave Maria Lane, 1842 - 40 pages |
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Page 25
... Moon from the Earth , is to the force of gravity at the Earth's surface inversely as the squares of those distances respectively from the centre of the Earth ; and because the Moon's distance , 240,000 miles , is equal to about 60 semi ...
... Moon from the Earth , is to the force of gravity at the Earth's surface inversely as the squares of those distances respectively from the centre of the Earth ; and because the Moon's distance , 240,000 miles , is equal to about 60 semi ...
Page 28
... Moon would be only 16523.6 3600 1 = 4.6 miles per diem , which is about 745 3 part of the Moon's actual centripetal force . If our reasoning is well founded we are led to enquire by what means the Moon's actual centripetal force can be ...
... Moon would be only 16523.6 3600 1 = 4.6 miles per diem , which is about 745 3 part of the Moon's actual centripetal force . If our reasoning is well founded we are led to enquire by what means the Moon's actual centripetal force can be ...
Page 30
... Moon's motions in her two orbits . These The Moon's continually keeping the same hemisphere turned towards the Earth , is consistent with the supposition that the mag- netic influence subsists between the Earth and the Moon ; for in ...
... Moon's motions in her two orbits . These The Moon's continually keeping the same hemisphere turned towards the Earth , is consistent with the supposition that the mag- netic influence subsists between the Earth and the Moon ; for in ...
Page 31
... Moon would present to the Earth if she had no rotation at all . It is obvious , that if the Moon's rotation were in the opposite direc- tion to what it is , or if her axis were at right angles to its present direction , she would in every ...
... Moon would present to the Earth if she had no rotation at all . It is obvious , that if the Moon's rotation were in the opposite direc- tion to what it is , or if her axis were at right angles to its present direction , she would in every ...
Page 32
... Moon's motion in her orbit could have no effect upon her rotation . Now rotatory motion being circular is therefore uniform , and an uniform rotatory motion would be continually at variance with the irregular motions of the Moon in its ...
... Moon's motion in her orbit could have no effect upon her rotation . Now rotatory motion being circular is therefore uniform , and an uniform rotatory motion would be continually at variance with the irregular motions of the Moon in its ...
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An Exposition of the Nature, Force, Action, and Other Properties of ... Joseph Denison No preview available - 2016 |
Common terms and phrases
action an excess action of gravitation actual centripetal force altitudes analogies are conformable ANALOGY FOR DETERMINING Author AVE MARIA B S does represent cause B S centre centri composition cone cube cube-roots D¹³ DETERMINING THE DISTANCES discovered by Kepler distance Cc Earth Earth's gravitation Earth's surface EFFICIENT CAUSES ellipse equal constant forces EXPOSITION famous analogy discovered force of gravitation forces are inversely GILBERT & RIVINGTON greater action greater force inverse ratios John's Square Jupiter Kepler's analogy mean distances mean velocities miles per diem Moon Moon's actual centripetal Moon's continually netic orbit planets are inversely PROPERTIES OF GRAVITATION ratio of B S received hypothesis represent the greater revolution round right angles right line E B satellites Saturn square root ofto stant forces Sun's gravitation total force trace these analogies uniform motions velocities and periodic wherefore by equality wherefore the force
Popular passages
Page 7 - The cubes of the mean distances of the planets from the sun are proportional to the squares of their times of revolution.
Page 2 - ... the squares of the periodic times are as the cubes of the distances from the common centre, the centripetal forces will be inversely as the squares of the distances.
Page 8 - A new Analogy for determining the distances of the Planets from the Sun, and of the Satellites from their Primaries.
Page 20 - In experimental philosophy, propositions collected from the phznomena by induction are to be deemed (notwithstanding contrary hypotheses) either exactly or very nearly true, till other phznomena occur, by which they may be rendered either more accurate, or liable to exception.
Page 1 - Author has propounded two new analogies, viz. that the velocities of the planets in their orbits are inversely as the square roots of their distances from the Sun...
Page 20 - ... position of the stars with respect to these points and circles, as also the phenomena occurring in the sphere of the Heavens. 2. Theoretical Astronomy, which enables us to determine from observation the true paths of the heavenly bodies, particularly of the planets. 3. Physical Astronomy, which gives the laws by which the motions of the heavenly bodies are regulated, shows how these motions are to be calculated according to the rules of mechanics, and finally combines all that is known up to...