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" Conventionally the period is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. "
Elements of Plane and Spherical Trigonometry with Logarithmic and Other ... - Página 53
por Simon Newcomb - 1882 - 104 páginas
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The Universal Preceptor: Being a General Grammar of Arts, Sciences, and ...

Sir Richard Phillips - 1817 - 316 páginas
...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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An Elementary Course of Mathematics: Designed Principally for Students of ...

Harvey Goodwin - 1846 - 468 páginas
...three kinds of days recognised by astronomers, viz., Sidereal, Solar, and Mean Solar. Each of them is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. The sidereal day is the interval between two successive transits of the true first point of Aries;...
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An Elementary Course of Mathematics: Designed Principally for Students of ...

Harvey Goodwin - 1849 - 528 páginas
...three kinds of days recognised by astronomers, viz. Sidereal, Solar, and Mean Solar. Each of them is divided into 24 hours, each hour into 60 minutes, and each minute into Go seconds. The sidereal day is the interval between two successive transits of the true first point...
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Hand-books of Natural Philosophy and Astronomy, Volumen3

Dionysius Lardner - 1854
...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, it...
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Hand-book of Natural Philosophy and Astronomy: 3d Course. Meteorology ...

Dionysius Lardner - 1853 - 852 páginas
...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, it...
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An Introduction to the Elements of Practical Astronomy

James R. Christie - 1853 - 118 páginas
...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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Handbook of astronomy

Dionysius Lardner - 1860
...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, it...
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A Written Arithmetic, for Common and Higher Schools: To which is Adapted a ...

George Augustus Walton - 1864 - 348 páginas
...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 Treatise on Astronomy

Elias Loomis - 1866 - 338 páginas
...complete revolution of the firmament is called a sidereal day. This interval is divided into 24 sidereal hours, each hour into 60 minutes, and each minute into 60 seconds. Since the celestial sphere turns through 360° in 24 sidereal hours, it turns through 15° in one sidereal...
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Lecture-notes on Physics...: Pt. 1

Alfred Marshall Mayer - 1868 - 115 páginas
...The sidereal day, which is used by astronomers, is 3m. 56'5s. less than the solar day. Both days are divided into 24 hours ; each hour into 60 minutes ; and each minute into 60 seconds ; the seconds are sub-divided decimally. The hours are designated by the sign h ; the minutes by m...
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