 | John Russell Hind - Astronomy - 1852 - 76 pages
...mean or average motion in the ecliptic, and a clock regulated by this fictitious sun shows mean time. The difference between apparent and mean time is called the Equation of Time, the clock being sometimes before the sun, ie, showing noon before the true sun arrives on the meridian,... | |
 | William Ralston Balch - Bookbinding - 1895 - 830 pages
...generally called mean time simply. True or apparent solar time is measured by the motion of the real sun. The difference between apparent and mean time is called the equation of time; by means of it we change apparent to mean time, or the reverse. Sidereal Time. Sidereal time is measured... | |
 | United States - 1895 - 578 pages
...regulated to mean solar time. True, or Apparent Solar Time is measured by the motion of the real sun. The difference between apparent and mean time is called the Equation of Time. By means of it, we change apparent to mean time, or the reverse. Thus, if the apparent time be given,... | |
 | United States - 1898 - 580 pages
...regulated to mean solar time. True, or Apparent Solar Time is measured by the motion of the real sun. The difference between apparent and mean time is called the Equation of Time. By means of it, we change apparent to mean time, or the reverse. Thus, if the apparent time be given,... | |
 | William Thoms - Nautical astronomy - 1902 - 514 pages
...of the Earth in her orbit, combined with the inclination of its axis to the plane of the Ecliptic. The difference between Apparent and Mean Time is called the Equation of Time, and amounts to orer 1 6 minutes sometimes. It is computed for the Noon at Greenwich, and set down on... | |
 | Nathaniel Bowditch - Nautical astronomy - 1906 - 670 pages
...times jn advance of it. It is this time that is measured by the clocks in ordinary use, and to this the chronometers used by navigators are regulated....times may be made. Its magnitude and the direction of ita application may be found for any moment from the Nautical Almanac. 276. SIDEREAL TIME. — Sidereal... | |
 | John Cresson Trautwine - Civil engineering - 1906 - 1150 pages
...advance of the clock, in May and in the fall, with a maximum, about November 2, of about 16m, 20s. The difference between apparent and mean time is called the equation of time. It can be obtained from the Nautical Almanac, or, approximately, by taking the mean between the times... | |
 | Llewellyn George - Astrology - 1912 - 138 pages
...than about 16 minutes. Clocks iji general use and navigator's chronometers are regulated to this time. The difference between apparent and mean time is called the equation of time. * * * LEAP YEAR. In the year 46 BC Julius Caesar introduced what is known as the Julian calendar, in... | |
 | William Galt Raymond - Railroad engineering - 1915 - 572 pages
...meridian. Mean time is time according to the mean sun and is what is carried by clocks and watches. The difference between apparent and mean time is called the equation of time and is found in the Nautical Almanac and reprints. It is sometimes to be added and sometimes subtracted... | |
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Time, which is perfectly equable in its increase, is measured by the motion of this mean sun. The clocks in ordinary use and the chronometers used by navigators are regulated to mean solar time. True, or Apparent Solar Time is measured by the motion of... 
