| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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,... | |
| 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... | |
| 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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