| Sir Richard Phillips - 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,... | |
| Harvey Goodwin - 1846 - 500 pages
...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;... | |
| Harvey Goodwin - 1849 - 588 pages
...are 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... | |
| Anna Cabot Lowell - 1850 - 378 pages
...solar day whose commencement never differs from that of the actual solar day much more than 16 minutes. **The mean solar day is divided into 24 hours, each hour into 60 minutes,** each minute into 60 seconds, and these are each of a fixed and determinate length. A pendulum 39.13929... | |
| 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
...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,... | |
| James R. Christie - 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... | |
| 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
...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.... | |
| George Augustus Walton, Mrs. Electra Nobles Lincoln Walton - 1865 - 354 pages
...Solar Day 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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