## History of Astronomy |

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Page vii

... EULER, LAGRANGE, LAPLACE, ETC. . . . . . . . . . . . . . Discovery of NEw PLAN

Ets—HERSCHEL, PIAzzi, ADAMS, AND LE

64 74 8I IO. Book III OBSERVATION INSTRUMENTS OF PRECISION — SIZE OF

...

... EULER, LAGRANGE, LAPLACE, ETC. . . . . . . . . . . . . . Discovery of NEw PLAN

Ets—HERSCHEL, PIAzzi, ADAMS, AND LE

**VERRIER**. . . . . . PAGE iii 3o 4O 5764 74 8I IO. Book III OBSERVATION INSTRUMENTS OF PRECISION — SIZE OF

...

Page 81

Discovery of NEw PLANETs — HERscHEL, PIAzzi, ADAMS, AND LE

would be very interesting, but quite impossible in these pages, to discuss all the

exquisite researches of the mathematical astronomers, and to inspire a ...

Discovery of NEw PLANETs — HERscHEL, PIAzzi, ADAMS, AND LE

**VERRIER**. Itwould be very interesting, but quite impossible in these pages, to discuss all the

exquisite researches of the mathematical astronomers, and to inspire a ...

Page 82

Legendre, Clairaut, Euler, Lagrange, Laplace, Walmsley, Bailly, Lalande,

Delambre, Meyer, Hansen, Burchardt, Binet, Damoiseau, Plana, Poisson, Gauss,

Bessel, Bouvard, Airy, Ivory, Delaunay, Le

date.

Legendre, Clairaut, Euler, Lagrange, Laplace, Walmsley, Bailly, Lalande,

Delambre, Meyer, Hansen, Burchardt, Binet, Damoiseau, Plana, Poisson, Gauss,

Bessel, Bouvard, Airy, Ivory, Delaunay, Le

**Verrier**, Adams, and others of laterdate.

Page 86

And yet there remained still the most brilliant triumph of all, the addition of

another planet like Uranus, before it had ever been seen, when the analysis of

Adams and Le

explain ...

And yet there remained still the most brilliant triumph of all, the addition of

another planet like Uranus, before it had ever been seen, when the analysis of

Adams and Le

**Verrier**gave a final proof of the powers of Newton's great law toexplain ...

Page 88

... that Airy's very natural inquiry showed no proportionate desire to search for the

planet. Anyway, the matter lay in embryo for nine months. . Meanwhile, one of the

ablest French astronomers, Le

... that Airy's very natural inquiry showed no proportionate desire to search for the

planet. Anyway, the matter lay in embryo for nine months. . Meanwhile, one of the

ablest French astronomers, Le

**Verrier**, experienced in computing perturbations ...### What people are saying - Write a review

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### Common terms and phrases

accurate Airy ancient Astronomer Royal astronomical units bright calculations Cape catalogue centre century Chaldaeans Chinese comet Copernicus diameter discovered discovery earth Egyptian epicycles equatorial error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus History of Astronomy Huggins instruments JOHANNEs KEPLER John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance measured ment Mercury meteor miles a second moon nebulae Newton º º observations Observatory orbit parallax period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolving round ring rotation satellites Saturn seems showing Sir William Herschel Sirius solar eclipse solar system spectra spectroscope spectrum sphere spots stellar sun-spot supposed tables telescope theory tion Trans Tycho Brahe universal gravitation Uranus velocity Venus Verrier

### Popular passages

Page 67 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.

Page 26 - So he sate and cunningly guided the craft with the helm, nor did sleep fall upon his eyelids, as he viewed the Pleiads and Bootes, that setteth late, and the Bear, which they likewise call the Wain, which turneth ever in one place, and keepeth watch upon Orion, and alone hath no part, in the baths of Ocean. This star, Calypso, the fair goddess, bade him to keep ever on the left as he traversed the deep.

Page 53 - The third, viz. that the squares of the periodic times are proportional to the cubes of the mean distances...

Page 79 - Wherefore if according to what we have already said it should return again about the year 1758, candid posterity will not refuse to acknowledge that this was first discovered by an Englishman.

Page 122 - ... They have not been regarded as so successful as his geometrical analysis of the observed phenomena. It is only just to add that he himself did not attach equal weight to them ; for in answer to objections urged by Lalande to his theory that the spots are depressions, Wilson wrote thus in 1783 : — ' Whether their first production and subsequent numberless changes depend upon the eructation of elastic vapours from below, or upon eddies or whirlpools commencing at the surface, or upon the dissolving...

Page 51 - He then said boldly that it was impossible that so good an observer as Tycho could be wrong by eight minutes* and added, " out of these eight minutes we will construct a new theory that will explain the motions of all the planets.