History of Astronomy |
From inside the book
Results 1-3 of 15
Page 18
may be regarded as the founder of observational astronomy . He measured the
obliquity of the ecliptic , and agreed with Eratosthenes . He altered the length of
the tropical year from 365 days , 6 hours to 365 days , 5 hours , 53 minutes — still
...
may be regarded as the founder of observational astronomy . He measured the
obliquity of the ecliptic , and agreed with Eratosthenes . He altered the length of
the tropical year from 365 days , 6 hours to 365 days , 5 hours , 53 minutes — still
...
Page 40
He says that , after using all these devices to make theory agree with Tycho ' s
observations , he still found errors amounting to eight minutes of a degree . Then
he said boldly that it was impossible that so good an observer as Tycho could ...
He says that , after using all these devices to make theory agree with Tycho ' s
observations , he still found errors amounting to eight minutes of a degree . Then
he said boldly that it was impossible that so good an observer as Tycho could ...
Page 41
could have made a mistake of eight minutes , and added : “ Out of these eight
minutes we will construct a new theory that will explain the motions of all the
planets . ” . And he did it , with elliptic orbits having the sun in a focus of each .
could have made a mistake of eight minutes , and added : “ Out of these eight
minutes we will construct a new theory that will explain the motions of all the
planets . ” . And he did it , with elliptic orbits having the sun in a focus of each .
What people are saying - Write a review
We haven't found any reviews in the usual places.
Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
5 other sections not shown
Other editions - View all
Common terms and phrases
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
Bibliographic information
| Title | History of Astronomy Hist. of sci. series History of science series |
| Author | George Forbes |
| Publisher | Watts, 1909 |
| Original from | the University of California |
| Digitized | 13 Jan 2011 |
| Length | 154 pages |
| Export Citation | BiBTeX EndNote RefMan |