The New Encyclopaedia Britannica, Volume 9Encyclopaedia Britannica, 1985 - Encyclopedias and dictionaries |
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Page 140
... parallax is used directly to find the distance of the body from the Earth ( geocentric parallax ) and from the Sun ( he- liocentric parallax ) . The two positions of the observer and the position of the object form a triangle ; if the ...
... parallax is used directly to find the distance of the body from the Earth ( geocentric parallax ) and from the Sun ( he- liocentric parallax ) . The two positions of the observer and the position of the object form a triangle ; if the ...
Page 141
... parallax . The first parallax determi- nation was for the Moon , by far the nearest ce- lestial body . Hipparchus ( 150 BC ) determined the Moon's parallax to be 58 ' for a distance of approximately 59 times the Earth's equatorial ...
... parallax . The first parallax determi- nation was for the Moon , by far the nearest ce- lestial body . Hipparchus ( 150 BC ) determined the Moon's parallax to be 58 ' for a distance of approximately 59 times the Earth's equatorial ...
Page 142
... parallax can be derived from the ap- parent magnitude of the star if there are any means of knowing the absolute magnitude of the star ; i.e. , the magnitude the star would have at the standard distance of 10 parsecs . For many stars a ...
... parallax can be derived from the ap- parent magnitude of the star if there are any means of knowing the absolute magnitude of the star ; i.e. , the magnitude the star would have at the standard distance of 10 parsecs . For many stars a ...
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