## History of Astronomy |

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Page 57

Newton proceeded to explain the other inequalities recognised by Tycho Brahe

and older observers , and to

his theory . He further discovered from his

of ...

Newton proceeded to explain the other inequalities recognised by Tycho Brahe

and older observers , and to

**calculate**their maximum amounts as indicated byhis theory . He further discovered from his

**calculations**two new inequalities , oneof ...

Page 61

... generally taken as constant . But Laplace ' s

value to depend upon the excentricity of the earth ' s orbit , which , according to

theory , has a periodical variation of enormous period , and has been continually

...

... generally taken as constant . But Laplace ' s

**calculations**showed the newvalue to depend upon the excentricity of the earth ' s orbit , which , according to

theory , has a periodical variation of enormous period , and has been continually

...

Page 70

He applied to his

novelty of the problem , his

of astronomy . In criticism it has been said that these were exhibitions of skill ...

He applied to his

**calculations**every possible refinement , and , considering thenovelty of the problem , his

**calculation**was one of the most brilliant in the recordsof astronomy . In criticism it has been said that these were exhibitions of skill ...

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### Contents

ANCIENT GREEK ASTRONOMY | 3 |

GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |

NEWTONS SUCCESSORS HALLEY EULER | 60 |

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### Common terms and phrases

accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later light lunar Mars mass mathematical mean measured method miles moon moon's motion move nebulæ Newton noted noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY