History of Astronomy |
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Page 14
Parmenides supposed the earth to be a sphere . Pythagoras ( 569 - 470 B . C . )
visited Egypt to study science . He deduced his system , in which the earth
revolves in an orbit , from fantastic first principles , of which the following are
examples ...
Parmenides supposed the earth to be a sphere . Pythagoras ( 569 - 470 B . C . )
visited Egypt to study science . He deduced his system , in which the earth
revolves in an orbit , from fantastic first principles , of which the following are
examples ...
Page 16
Aristotle ( 384 - 322 B . C . ) summed up the state of astronomical knowledge in
his time , and held the earth to be fixed in the centre of the world . Nicetas ,
Heraclides , and Ecphantes supposed the earth to revolve on its axis , but to have
no ...
Aristotle ( 384 - 322 B . C . ) summed up the state of astronomical knowledge in
his time , and held the earth to be fixed in the centre of the world . Nicetas ,
Heraclides , and Ecphantes supposed the earth to revolve on its axis , but to have
no ...
Page 22
We , who know that the earth revolves round the sun once in a year , can
understand that the apparent motion of a planet is only its motion relative to the
earth . If , then , we suppose the earth fixed and the sun to revolve round it once a
year ...
We , who know that the earth revolves round the sun once in a year , can
understand that the apparent motion of a planet is only its motion relative to the
earth . If , then , we suppose the earth fixed and the sun to revolve round it once a
year ...
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Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
5 other sections not shown
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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 |