 | Sir Richard Phillips - 1817 - 348 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,... | |
 | Harvey Goodwin - 1846 - 500 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;... | |
 | Harvey Goodwin - 1849 - 588 páginas
...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 páginas
...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 páginas
...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 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,... | |
 | James R. Christie - 1853 - 140 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... | |
 | Dionysius Lardner - 1860 - 614 páginas
...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 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.... | |
 | George Augustus Walton, Mrs. Electra Nobles Lincoln Walton - 1865 - 354 páginas
...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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The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds. 
