Therefore clocks and chronometers can not be regulated to apparent solar time, which may, however, be determined by observations of the Sun when visible. Mean Solar Time is measured by the motion of a fictitious body called the mean Sun, which is supposed... The American Ephemeris and Nautical Almanac - Page 701by United States Naval Observatory. Nautical Almanac Office - 1911Full view - About this book
| George W. Parker - 1902 - 270 pages
...instead of keeping apparent solar time keep mean solar time as indicated by the motion of an imaginary body called the mean sun, which is supposed to move uniformly in the equator at the same mean rate as that of the true sun in the ecliptic. Definition. — A mean solar... | |
| United States Naval Observatory. Nautical Almanac Office - 1915 - 798 pages
...87.5 7 12 25 -3 56.9 -9.87+ ON THE ARRANGEMENT AND USE OF THE AMERICAN EPHEMERIS AND NAUTICAL ALMANAC. There are in general use three different kinds of...the circuit in one tropical year. Since mean solar tune is uniform and regular in its passage, clocks and watches may be regulated to it, and those in... | |
| 1912 - 554 pages
...motion of the Sun, the length of the day being the interval between two successive transits of the iun over the same meridian, and the time of day being...tropical year. Since mean solar time is uniform and •jgular in its passage, clocks and watches may be regulated to it, and those in ordinary use are... | |
| United States. Defense Intelligence Agency - 1967 - 266 pages
...same meridian. mean solar time — Time measured by the diurnal motion of a fictitious body, termed the mean sun, which is supposed to move uniformly...equator, completing the circuit in one tropical year. Often termed simply mean time. The mean sun may be considered as moving in the celestial equator and... | |
| United States. Army Topographic Command - 1969 - 292 pages
...same meridian. mean solar time— Time measured by the diurnal motion of a fictitious body, termed the mean sun, which is supposed to move uniformly...equator, completing the circuit in one tropical year. Also called mean time. The mean sun may be considered as moving in the celestial equator and having... | |
| Robert C. Smith - 1995 - 472 pages
...convenient for most modern purposes because of its variability. Instead, astronomers measure time in terms of a fictitious body called the mean Sun, which is supposed to move along the equator with a uniform motion in right ascension equal to the mean motion of the real Sun... | |
| 1916 - 282 pages
...Sidereal Time or Star Time, True Solar Time, also called Apparent Solar Time, and Mean Solar Time. Mean Solar Time is measured by the motion of a fictitious...uniform and regular in its passage, clocks and watches are regulated to it. The Equation of Time (Sun fast or Sun slow) is the difference in the hour angle... | |
| United States. War Department - 64 pages
...order to establish a solar day of uniform length, a fictitious luminary called the mean, sun is assumed to move uniformly in the celestial equator, completing the circuit in one tropical year. (See par. 19.) As used in the American Ephemeris and Nautical Almanac a mean solar day coincides with... | |
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