| Sir Richard Phillips - 1817 - 348 pages
...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,... | |
| Harvey Goodwin - 1846 - 500 pages
...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;... | |
| Dionysius Lardner - 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,... | |
| Dionysius Lardner - 1853 - 960 pages
...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,... | |
| Dionysius Lardner - 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,... | |
| George Augustus Walton - 1864 - 364 pages
...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.... | |
| Elias Loomis - 1866 - 384 pages
...— The time of one 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... | |
| Alfred Marshall Mayer - 1868 - 140 pages
...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... | |
| Elias Loomis - 1870 - 398 pages
...— The time of one 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... | |
| Elias Loomis - 1870 - 274 pages
...— The time of one 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 degrees in... | |
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