History of Astronomy |
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Page 19
Halley , in 1693 , compared this value with his own measurements , and so
discovered the acceleration of the moon ' s mean motion . This was conclusively
established , but could not be explained by the Newtonian theory for quite a long
time ...
Halley , in 1693 , compared this value with his own measurements , and so
discovered the acceleration of the moon ' s mean motion . This was conclusively
established , but could not be explained by the Newtonian theory for quite a long
time ...
Page 42
All of the best theories were compared by him with observation . ... He proceeds
cautiously with his propositions until he arrives at his great laws , and he
concludes his book by comparing observations of Mars , of all dates , with his
theory .
All of the best theories were compared by him with observation . ... He proceeds
cautiously with his propositions until he arrives at his great laws , and he
concludes his book by comparing observations of Mars , of all dates , with his
theory .
Page 44
And the observation of Tycho gives the direction of Mars compared with the sun ,
SE , M . So all the angles of the triangle SEM in any of these positions of E are
known , and also the ratios of SE , SE , , SE , SE , to SM and to each other . For
the ...
And the observation of Tycho gives the direction of Mars compared with the sun ,
SE , M . So all the angles of the triangle SEM in any of these positions of E are
known , and also the ratios of SE , SE , , SE , SE , to SM and to each other . For
the ...
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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
Bibliographic information
| Title | History of Astronomy The history of science series |
| Author | George Forbes |
| Publisher | Watts, 1921 |
| Original from | Indiana University |
| Digitized | 5 Aug 2010 |
| Length | 150 pages |
| Export Citation | BiBTeX EndNote RefMan |