 | William Chauvenet - 1864 - 720 pages
...equinox (also called the First point of Aries, and denoted by the symbol for Aries, T). 39. A sidereal day is the interval of time between two successive (upper) transits of the true vernal equinox over the same meridian. of the vernal equinox is so nearly the same at two successive... | |
 | William Chauvenet - 1864 - 726 pages
...equinox (also called the First point of Aries, and denoted by the symbol for Aries, T). 39. A sidereal day is the interval of time between two successive (upper) transits of the true vernal equinox over the same meridian. of the vernal equinox is so nearly the same at two successive... | |
 | Ellen Eliza Fitz - 1876 - 138 pages
...(see Art. 54) are always employed to mark the beginning and end of the sidereal day. 87. A solar dg.y is the interval of time between two successive upper transits of the sun over the same meridian. Had the earth only a rotation on its axis, so that the sun was stationary in the heavens like a fixed... | |
 | Edouard Deville - 1878 - 122 pages
...Transits are divided into upper and lower, according as they take place above or below the pole. A day is the interval of time between two successive upper transits of a heavenly body. It is a solar, lunar or sidereal day, according as the body is the sun, the moon or... | |
 | John Butler Johnson - 1886 - 724 pages
...of transit of any star whose RA is known, the local sidereal time will be at once known. An Apparent Solar Day is the interval of time between two successive upper transits of the true sun across the same meridian. Apparent or True Solar Time is the hour-angle of the true sun. Owing... | |
 | John Butler Johnson - 1886 - 798 pages
...transit of *any star whose RA is known, the local sidereal time will be at once known. An Apparent Solar Day is the interval of time between two successive upper transits of the true sun across the same meridian. Apparent or True Solar Time is the hour-angle of the true sun. that... | |
 | John Butler Johnson - 1886 - 874 pages
...equator across the meridian of any place. The point naturally chosen is the vernal equinox. A Sidereal Day is the interval of time between two successive upper transits of the vernal equinox over the same meridian. The Sidereal Time at any instant is the hour-angle of the vernal... | |
 | William Wallace Campbell - 1891 - 190 pages
...pass through the vernal equinox at the same instant. The second body is called the mean sun. A mean solar day is the interval of time between two successive upper transits of the mean sun over the same meridian. The hour angle of the mean sun is the mean time. The difference between... | |
 | Alexander Ziwet - 1893 - 208 pages
...convenient to make the measurement of time depend on the apparent revolution of the sun. But the interval between two successive upper transits of the sun over the same meridian, which is the true, or apparent solar day, is not constant throughout the year, owing to the inclination... | |
 | William Wallace Campbell - 1899 - 288 pages
...pass through the vernal equinox at the same instant. The second body is called the mean sun. A mean solar day is the interval of time between two successive upper transits of the mean sun over the same meridian. The hour angle of the mean sun is the mean time. It is reckoned from... | |
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A sidereal day is the interval of time between two successive upper transits of the vernal equinox over the same meridian. 
