History of Astronomy |
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Page 111
During the opposition of 1881 – 2 the same observer re - observed the canals ,
and in twenty of them he found the canals duplicated , ' the second canal being
always 200 to 400 miles distant from its fellow . The existence of these canals has
...
During the opposition of 1881 – 2 the same observer re - observed the canals ,
and in twenty of them he found the canals duplicated , ' the second canal being
always 200 to 400 miles distant from its fellow . The existence of these canals has
...
Page 115
This fact had also been established for Saturn ' s fifth satellite , and may be true
for satellites , and found them to be 2 , 429 , 2 , 180 , 3 , 561 , and 3 , 046 miles .
In modern times much interest has been taken in watching a rival to Cassini ' s ...
This fact had also been established for Saturn ' s fifth satellite , and may be true
for satellites , and found them to be 2 , 429 , 2 , 180 , 3 , 561 , and 3 , 046 miles .
In modern times much interest has been taken in watching a rival to Cassini ' s ...
Page 128
3 Taking the velocity of light at 186 , 000 miles a second , and the earth ' s mean
distance at 93 , 000 , 000 miles , i lightyear = 5 , 865 , 696 , 000 , 000 miles or 63 ,
072 astronomical units ; i astronomical unit a year = 2 . 94 miles a second ; and ...
3 Taking the velocity of light at 186 , 000 miles a second , and the earth ' s mean
distance at 93 , 000 , 000 miles , i lightyear = 5 , 865 , 696 , 000 , 000 miles or 63 ,
072 astronomical units ; i astronomical unit a year = 2 . 94 miles a second ; and ...
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Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
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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 |