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Definition of Mean sun
1. Noun. A theoretical sun that moves along the celestial equator at a constant speed and completes its annual course in the same amount of time the real sun takes at variable speeds.
Lexicographical Neighbors of Mean Sun
Literary usage of Mean sun
Below you will find example usage of this term as found in modern and/or classical literature:
1. The American Practical Navigator: Being an Epitome of Navigation and by Nathaniel Bowditch, George Wood Logan (1906)
"Mean time is the hour angle of the mean sun; sidereal time is the hour angle of
the First Point of Aries. Since the Right Ascension of the mean sun is ..."
2. The Observatory by Royal Astronomical Society (Gran Bretaña), Royal Greenwich Observatory, NASA Astrophysics Data System Abstract Service, Royal astronomical society GB (1884)
"And as we make 110 distinction in our theories between the real motion of the
Suu in longitude and that, of the mean Sun, the meaning of the real Sun is ..."
3. The Observatory (1884)
"And as we make no distinction in our theories between the real motion of the Sun
in longitude and that of the mean Sun, the meaning of the real Sun is fixed ..."
4. A Manual of Spherical and Practical Astronomy: Embracing the General by William Chauvenet (1900)
"The greatest difference is about 16" The equation of time is also the difference
between the right ascensions of the true sun and the second mean sun. ..."
5. The Indian Calendar: With Tables for the Conversion of Hindu and Muhammadan by Robert Sewell, Śaṅkara Bālakr̥shṇa Dīkshita (1896)
"An imaginary sun, called the mean sun, is conceived to ... The days marked by
this mean sun will all be equal, and the interval between two successive ..."
6. Investigation of Inequalities in the Motion of the Moon Produced by the by Simon Newcomb, Frank Elmore Ross (1907)
"Reduction of coordinates to the radius vector of the mean sun as X-axis. In the
developments in Action the Sun's perihelion was taken as the origin from ..."
7. A Treatise on Astronomy for the Use of Colleges and Schools by Hugh Godfray (1886)
"Conceive an imaginary body, called the mean sun, to move along the equator ...
The days marked by this mean sun will be all equal, and exactly the average ..."
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