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" The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. "
An Elementary Course of Mathematics: Designed Principally for Students of ... - Page 461
by Harvey Goodwin - 1846 - 468 pages
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The Universal Preceptor: Being a General Grammar of Arts, Sciences, and ...

Sir Richard Phillips - Arts - 1817 - 348 pages
...one day over ; the weeks into seven days, or rotations of the earth on its own axis ; those rotations into 24 hours ; each hour into 60 minutes ; and each minute into 60 seconds, or periods, in which a pendulum that is 39,2. inches long, will vibrate. The vibration of such a pendulum,...
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The Elements of the Theory of Astronomy

John Hymers - Astronomy - 1840 - 386 pages
...of which is divided into 24 equal parts or hours, each hour into CO minutes, and each minute into 00 seconds. The sidereal day is the interval between...successive transits of the true first point of Aries ( r ), and begins when that point is on the meridian. The sidereal day may be considered the same as...
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Hand-books of Natural Philosophy and Astronomy, Volume 3

Dionysius Lardner - Astronomy - 1854 - 870 pages
...revolution of the firmament is called a SIDEREAL DAY. This interval is divided, like a common day, into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. Since in 24 sidereal hours the sphere turns through 360°, and since its motion is rigorously uniform,...
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Hand-book of Natural Philosophy and Astronomy: 3d Course. Meteorology ...

Dionysius Lardner - Astronomy - 1853 - 960 pages
...revolution of the firmament is called a SIDEREAL i>.\ t . This interval is divided, like a common day, into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. Since in 24 sidereal hours the sphere turns through 360°, and since its motion is rigorously uniform,...
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Navigation and Nautical Astronomy: The Practical Part, Containing Rules for ...

H. W. Jeans - Nautical astronomy - 1853 - 314 pages
...sidereal year = 365a 6h 9m lls-5 t The sidereal day, the apparent solar day, and the mean solar day. 18. The sidereal day is the interval between two successive transits of the first point of Aries over the same meridian. It begins when that point of Aries is on the meridian....
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An Introduction to the Elements of Practical Astronomy

James R. Christie - Astronomical instruments - 1853 - 140 pages
...are the same, and therefore, if each interval be called a sidereal day, and divided into 24 sidereal hours, each hour into 60 minutes, and each minute into 60 seconds, then, if the length of our pendulum be such that it makes 86400 beats in that interval, the interval...
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Navigation and Nautical Astronomy, Part 1

H. W. Jeans - Nautical astronomy - 1858 - 314 pages
...sidereal year = 365d 6h 9m 11s-5 t The sidereal day, the apparent solar day, and the mean solar day. 18. The sidereal day is the interval between two successive transits of the first point of Aries over the same meridian. It begins when that point of Aries is on the meridian....
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Handbook of Astronomy

Dionysius Lardner - Astronomy - 1860 - 614 pages
...revolution of the firmament is called a SXDEBEAL DAT. This interval is divided, like a common day, into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. Since in 24 sidereal hours the sphere turns through 360°, and since its motion is rigorously uniform,...
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A Written Arithmetic, for Common and High Schools: To which is Adapted a ...

George Augustus Walton - Arithmetic - 1864 - 364 pages
...the time the earth takes to turn so as to bring the sun to the same meridian again. The solar day k divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. The denominations of time are centuries, years, months, weeks, days, hours, minutes and seconds, TABLE....
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A Written Arithmetic, for Common and Higher Schools; to which is Adapted a ...

George Augustus Walton, Mrs. Electra Nobles Lincoln Walton - Arithmetic - 1865 - 354 pages
...is the time the earth takes to turn so as to bring the sun to the same meridian again. The solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. The denominations of time are centuries, years, months, weeks, days, hours, minutes and seconds. TABLE....
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