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Books Books 1 - 10 of 19 on As the time deduced from observation of the true Sun is called true or apparent time,....  
" As the time deduced from observation of the true Sun is called true or apparent time, so the time deduced from the mean Sun, or indicated by the machines which represent its motion, is denominated mean time. "
The Nautical Almanac and Astronomical Ephemeris for the Year ... - Page 497
1834
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The improved coaster's guide, and Marine board examination, for the east ...

Alexander Baharie - 1844
...day ; and in that of a star a sidereal day. Q. What is the equation of time? A. The equation of time is the angular distance in time between the mean and the true sun. Q. What is refraction ? A. Refraction is an inflection of the rays of light proceeding from the heavenly...
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THE NAUTICAL ALMANAC AND ASTRONOMICAL EPHEMERIS FOR THE YEAR 1850.

JOHN MURRY - 1846
...Sun could be observed on the meridian at the instant that the clock or chronometer indicated Oh 0™ 0', it would again be observed there when the hour...with the aid of the equation of time, which is the angulnr distance in time between the mean and the trae Sun, we may readily deduce it. Suppose the true...
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An Introduction to Astrology

William Lilly, Zadkiel - Astrology - 1852 - 548 pages
...that shewn by the Sun, being on the meridian, and the mean noon, or that shewn by a correct watch, is the Equation of Time, which is the angular distance in time between the mean and the true Sun. The amount to be added to, or taken from, the time shewn by the watch is given for every sixth day...
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A collection of tables and formulć useful in surveying, geodesy, and ...

Thomas Jefferson Lee - Science - 1853 - 242 pages
...year. It cannot be immediately obtained from observation, but is always deduced from apparent time by the aid of the equation of time, which is the angular distance, in time, between the mean and true sun; or mean solar time = apparent solar time ± equation of time. Sidereal Time is the portion...
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Manuel d'arpentage et de lever des plans

Henri Barré (prof. at Nancy.), Lucien Roussel - 1873
...ear. It cannot be immediately obtained from observation, but is always deduced from apparent time by the aid of the equation of time, which is the angular distance, in time, between the mean and true sun; or, mean solar time = apparent solar time ± equation of time. Sidereal time is the portion...
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Tables and Formulae Useful in Surveying, Geodesy, and Practical Astronomy ...

Thomas Jefferson Lee - Astronomy - 1873 - 310 pages
...year. It cannot be immediately obtained from observation, but is al ways deduced from apparent time by the aid of the equation of time, which is the angular distance, in time, between the mean and true sun; or, mean solar time = apparent solar time equa tion of time. Sidereal time is the portion...
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Professional Papers of the Corps of Engineers of the United States Army

Military engineering - 1873
...year. It cannot be immediately obtained from observation, but is always deduced from apparent time by the aid of the equation of time, which is the angular distance, in time, between the mean and true sun; or, mean solar time = apparent solar time ± equation of time. Sidereal time is the portion...
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The Nautical Almanac and Astronomical Ephemeris

Great Britain. Nautical Almanac Office - 1874
...machines which represent its motion, is denominated mean time. Mean time cannot immediately be obtained from observation ; but, from an observation of the...distance in time between the mean and the true Sun, it may readily be deduced. Suppose the true Sun to be observed on the meridian of Greenwich, Jan. i,...
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The Nautical Almanac and Astronomical Ephemeris

Great Britain. Nautical Almanac Office - 1875
...denominated mean time. Mean time cannot be obtained from observation ; but it may readily be deduced from an observation of the true Sun, with the aid...distance in time between the mean and the true Sun. Suppose 2 к 2 the true Sun to be observed on the meridian of Greenwich, Jan. i, 1879 ; it would then...
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Elementary Lessons in Astronomy

Sir Norman Lockyer - Astronomy - 1876 - 348 pages
...after Christmas more rapidly than they would otherwise do. 418. We cannot obtain mean time at once from observation ; but, from an observation of the...the equation of time, which is the angular distance jn time between the mean and the true sun, we may readily ded.ice it. Suppose the true sun to be observed...
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