History of Astronomy |
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Page 51
All of these men felt a repugnance to accept the idea of a force acting across the
empty void of space . Descartes ( 1596 - 1650 ) proposed an ethereal medium
whirling round the sun with the planets , and having local whirls revolving with
the ...
All of these men felt a repugnance to accept the idea of a force acting across the
empty void of space . Descartes ( 1596 - 1650 ) proposed an ethereal medium
whirling round the sun with the planets , and having local whirls revolving with
the ...
Page 53
Also that Kepler ' s first law ( elliptic orbits with the sun in one focus ) was only
another way of saying that the force urging a planet to the sun varies inversely as
the square of the distance . Also ( if these two be granted ) it follows that Kepler ' s
...
Also that Kepler ' s first law ( elliptic orbits with the sun in one focus ) was only
another way of saying that the force urging a planet to the sun varies inversely as
the square of the distance . Also ( if these two be granted ) it follows that Kepler ' s
...
Page 133
But it was first to Savary , 3 and later to Encke and Sir John Herschel , that we
owe the computation of the elliptic elements of these stars ; also the resulting
identification of their law of force with Newton ' s force of gravitation applied to the
solar ...
But it was first to Savary , 3 and later to Encke and Sir John Herschel , that we
owe the computation of the elliptic elements of these stars ; also the resulting
identification of their law of force with Newton ' s force of gravitation applied to the
solar ...
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Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
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accepted accurate ancient appear astronomers attraction bodies born bright calculations called catalogue cause centre century circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect enabled epicycles equal error excentric explain fact fixed follow force Galileo give given gravitation heavenly heavens held Herschel Hipparchus idea included interesting invented Jupiter Kepler knowledge known later light lunar Mars mass mathematical mean measured method miles minutes moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planetary planets pole position predicted present principle progress proper proved records revolve rotation round Royal satellites says seems seen showed solar system spectroscope spectrum stars studied sun's supported supposed surface tables telescope theory tion trace true Tycho Brahe uniform universal