| 单词 | sidereal day |
| 例句 | So the solar day is about 4 minutes longer than the sidereal day. Astronomy 2016-10-13T00:00:00Z Note: For simplicity’s sake, these are all sidereal days, and “day” refers to an Earth day. Shaky rings help scientists measure Saturn’s days 2019-01-18T05:00:00Z This figure is known as the "sidereal day" or "stellar day". The year's best astronomy photos 2017-09-15T04:00:00Z A diurnal variation of the results would appear as a peak in the lock-in spectrum at a period of the sidereal day, which is 86,164.1 s. High-precision comparison of the antiproton-to-proton charge-to-mass ratio : Nature : Nature Publishing Group 2015-08-11T04:00:00Z A sidereal day is approximately 23 hours, 56 minutes and 4.1 seconds. The story of the 'most complicated' watch in the world 2014-11-11T05:00:00Z However, astronomers also use a sidereal day, which is defined in terms of the rotation period of Earth with respect to the stars. Astronomy 2016-10-13T00:00:00Z A deduction of the number of the years from the number of the sidereal days gave, as remainder, the number of civil days in the exeligmos. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z Up to the mid-20th century, the sidereal day, the period of the earth’s rotation on its axis in relation to the stars, was used to determine standard time. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z Then a sidereal day is three minutes fifty-six seconds shorter, than a solar day of twenty-four hours. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z The time of such a revolution is called a sidereal day, and is divided into hours, minutes and seconds. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" In a part of Earth’s orbit where Earth is moving faster than usual around the Sun, would the length of the sidereal day change? Astronomy 2016-10-13T00:00:00Z The mean solar days are all exactly the same length; they are equal to the length of the average apparent solar day; and they are each four minutes longer than a sidereal day. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture The Earth accomplishes a revolution on its axis in 23 hours 56 minutes 4 seconds mean solar time, which is the length of the sidereal day. The Astronomy of Milton's 'Paradise Lost' Around this pole the whole heavens appear to rotate once in a sidereal day; and we have hitherto always referred to the pole as though it were a fixed point in the heavens. The Story of the Heavens The length of the sidereal day is to the mean solar day as .99727 to 1, and various attempts have been made by trains of wheels to obtain this relation—but all are somewhat complicated. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" The Second is the time of one swing of a pendulum making 86,164.09 swings in a sidereal day, or 1/86,400 part of a mean solar day. The Story of Electricity The sidereal day and the mean solar day necessitate some means of registering time, such as clocks; therefore the original day in use must have been the apparent solar day. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture The sidereal day is a little shorter than the ordinary day, being only 23 hours, 56 minutes, and 4 seconds. The Story of the Heavens The time which the earth occupies in making a complete rotation around this axis is called a sidereal day. The Story of the Heavens |
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