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" The mean sun is an imaginary sun which moves to the eastward in the equinoctial at a uniform rate equal to the average rate of the true sun in the ecliptic. "
Elements of Astronomy with Numerous Examples and Examination Papers - Page 184
by George W. Parker - 1902 - 233 pages
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A guide book to the Local marine board examination. The ordinary examination ...

Thomas Liddell Ainsley - 1864
...parallel. A uniform measure of time is obtained by the invention of the Mean Solar Dai/. MEAN SOLAB DAY is the interval between two successive transits of the mean sun over the same meridian ; it begins when the mean sun is on the meridian. This fictitious body is conceived...
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The theory of navigation and nautical astronomy, together with the elements ...

William Thomas Read - Nautical astronomy - 1869 - 154 pages
...solar day is the interval between two successive transits of the true Sun across the same meridian. 33. A mean solar day is the interval between two successive transits of the Mean Sun. 34. A sidereal day is the interval between two successive transits of the 1st point of aries. 35. Equation...
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A guide book to the Local marine board examination. The ordinary examination ...

Thomas Liddell Ainsley - 1869
...points they are parallel. A uniform measure of time is obtained by the invention of the Mean Solar Day. MEAN SOLAR DAY is the interval between two successive transits of the mean mn over the same meridian ; it begins when the mean sun is on the meridian. This fictitious body is...
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Elementary Treatise on Nautical Astronomy: For the Use of Science Classes ...

Henry Evers - Nautical astronomy - 1873 - 144 pages
...between two successive transits of a celestial body across the same meridian. 48. Mean Solar Day. — A mean solar day is the interval between two successive transits of the mean sun over the same meridian. 49. Mean Time is time measured and indicated by the mean sun. It may also be...
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A guide book to the Local marine board examination. The ordinary ..., Volume 24

Thomas Liddell Ainsley - 1880
...they are parallel. A uniform measure of time is obtained by the invention of the Mean Solar Day. 303. Mean Solar Day is the interval between two successive transits of the mean sun over the same meridian ; it begins when the mean sun is on the meridian. This fictitious body is conceived...
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A Treatise on Practical Astronomy, as Applied to Geodesy and Navigation

Charles Leander Doolittle - Interpolation - 1885 - 658 pages
...intervals of time between each two successive transits over the same branch of the meridian will be equal. A MEAN SOLAR DAY is the interval between two successive transits of the second fictitious sun, or the mean sun over the upper branch of the meridian. THE MEAN SOLAU TIME at...
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The American Practical Navigator: Being an Epitome of Navigation and ...

Nathaniel Bowditch - Nautical astronomy - 1888 - 647 pages
...uniform motion in the equinoctial. Art. 21в Mean time is the hour-angle of the mean sun. A mean day is the interval between two successive transits of the mean sun over the meridian. Alean noon is the instant when the mean sun's hour-circle coincides with the meridian....
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A Treatise on Navigation and Nautical Astronomy: Including the Theory of ...

William Carpenter Pendleton Muir - Nautical astronomy - 1906 - 718 pages
...true sun in the ecliptic, and the time measured by the motions of this mean sun is called mean time. A mean solar day is the interval between two successive transits of the mean sun over the upper branch of the same meridian, and mean solar time at a given place is the hour angle...
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A Treatise on Navigation and Nautical Astronomy: Including the Theory of ...

William Carpenter Pendleton Muir - Nautical astronomy - 1906 - 718 pages
...true sun in the ecliptic, and the time measured by the motions of this mean sun is called mean time. A mean solar day is the interval between two successive transits of the mean sun over the upper branch of the same meridian, and mean solar time at a given place is the hour angle...
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A Manual of Field Astronomy

Andrew Hall Holt - Geodetic astronomy - 1916 - 128 pages
...rate, the assumed motion of the mean sun takes place along the celestial equator at a constant rate. A mean solar day is the interval between two successive transits of the mean sun over the same meridian. It is a constant unit and is equal in length to the average of all the apparent...
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