## History of Astronomy |

### From inside the book

Results 1-3 of 26

Page 57

22 , 50

51 . . . 11 . 14 Inequality of

22 , 50

**Mean**value of “ variation " . . . 36 . 10 35 . 47 Annual equation . . . . . . 11 .51 . . . 11 . 14 Inequality of

**mean**motion of apogee 19 . 43 22 . 17 Inequality of**mean**motion of nodes 9 . 24 1 . . . 9 . 0 The only serious discrepancy is the first ...Page 60

But : for his friendly insistence it is possible that the Principia would never have

been written ; and but for his generosity in supplying the

could not have published the book . Sir Isaac Newton died in 1727 , at the age of

...

But : for his friendly insistence it is possible that the Principia would never have

been written ; and but for his generosity in supplying the

**means**the Royal Societycould not have published the book . Sir Isaac Newton died in 1727 , at the age of

...

Page 61

by indisputable evidence that the secular inequality of the moon ' s

cannot be produced by the forces of gravitation . ” The same subject was again

proposed for a prize which was shared by Lagrange ' and Euler , neither finding a

...

by indisputable evidence that the secular inequality of the moon ' s

**mean**motioncannot be produced by the forces of gravitation . ” The same subject was again

proposed for a prize which was shared by Lagrange ' and Euler , neither finding a

...

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### Contents

ANCIENT GREEK ASTRONOMY | 3 |

GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |

NEWTONS SUCCESSORS HALLEY EULER | 60 |

### Other editions - View all

### 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