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 29
... magnet , attracts the Moon to her , in addition to their mutual attraction of gravitation ? If some additional attraction , beside that of gravitation , is requisite to account for the appearances , or rather the realities of the ...
... magnet , attracts the Moon to her , in addition to their mutual attraction of gravitation ? If some additional attraction , beside that of gravitation , is requisite to account for the appearances , or rather the realities of the ...
Page 31
... magnetic influence would be an adequate cause , and without such a cause the coinci- dence would appear fortuitous . Besides , to account for the Moon's continually turning the same hemisphere towards the Earth , except through the magnetic ...
... magnetic influence would be an adequate cause , and without such a cause the coinci- dence would appear fortuitous . Besides , to account for the Moon's continually turning the same hemisphere towards the Earth , except through the magnetic ...
Page 32
... If we may be permitted to carry this rea- soning further , we might suggest an experi- ment which would put our hypothesis to the test , or at least exhibit it in another form . Let E represent a very powerful magnet , suspended by 32.
... If we may be permitted to carry this rea- soning further , we might suggest an experi- ment which would put our hypothesis to the test , or at least exhibit it in another form . Let E represent a very powerful magnet , suspended by 32.
Page 33
Joseph Denison. Let E represent a very powerful magnet , suspended by two Р R 住 horizontal strings , fixed to the ... magnetic force , and the magnetic force much greater ( or 16 times greater ) than the force of gravitation at м ; then ...
Joseph Denison. Let E represent a very powerful magnet , suspended by two Р R 住 horizontal strings , fixed to the ... magnetic force , and the magnetic force much greater ( or 16 times greater ) than the force of gravitation at м ; then ...
Page 34
... magnet , in the same orbit which constituted its first revolution as the resultant of the composition of the three forces , centrifugal , centripetal , and gravity . For the acceleration of gravity , as the ball descended in its orbit ...
... magnet , in the same orbit which constituted its first revolution as the resultant of the composition of the three forces , centrifugal , centripetal , and gravity . For the acceleration of gravity , as the ball descended in its orbit ...
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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...