 | 1834 - 578 pagine
...but they may be so adjusted that the period of the oscillation shall be accurately the same in all. The length of a pendulum vibrating seconds in the latitude of London, 51° 31.'1, in a vacuum at the level of the sea, is 39,13929 inches. Taking these common divisions of time... | |
 | John Bonnycastle - 1835 - 308 pagine
...the inches in its length ? v'2(375)2=52 inches long, and 52 vibrations. It is ' proposed to determine the length of a pendulum vibrating seconds, in the latitude of London, where a heavy body falls through Iftf, feet in the first second of time ? 3.1416 circumference, the... | |
 | James Thomson (LL.D.) - 1837 - 296 pagine
...to be the origin of all other measures of length. The thirty-siith part of this yard is an inch; and the length of a pendulum vibrating seconds in the latitude of London is found to be 39-139:-. such inches; that is, according to the notation of decimal fractions, 39 inches... | |
 | James Renwick - 1840 - 412 pagine
...appreciable error) as similar segments of spheres, of the radii of their several distances. D riablc pendulum, as such an apparatus is called, are sensibly...of a pendulum vibrating seconds in the latitude of New- York (40° 42' 43" N.), in vacua, at the level of the sea, has been accurately determined to be... | |
 | W. H. CRANK - 1843 - 340 pagine
...32-197 inches. To find the time of one vibration of any pendulum. I. RULE. — As the square root of the length of a pendulum vibrating seconds in the latitude of London is to the square root of the length of the given pendulum, so is 1 to the time of one vibration. Ex.... | |
 | American Academy of Arts and Sciences - 1880 - 436 pagine
...Endeavors to find a Standard of Length. 1798, page 185, &c. Kater's Account of Experiments for determining the Length of a Pendulum vibrating Seconds in the Latitude of London. 1818, page 83, &c. Kateron the Length of the French Metre as compared with Shuckburgh's Scale, 0- 39.4... | |
 | John Hunter (of Uxbridge.) - 1847 - 266 pagine
...land measuring, 7-92 inches = 1 link; 4 poles or 66 feet = 1 chain of 100 links; 80 chains = 1 mile. The length of a pendulum vibrating seconds, in the latitude of London, is 39-1393 inches. This is the standard of lineal SUPERFICIAL MEASURE.—10 chains in length by 1 in... | |
 | American Academy of Arts and Sciences - 1880 - 428 pagine
...Endeavors to find a Standard of Length. 1798, page 166, to. Hater's Account of Experiments for determining the Length of a Pendulum vibrating Seconds in the Latitude of London. 1818, page 83, &c. Kater on the Length of the French Metre as compared with Shuckburgh's Scale, 0-39.4... | |
 | John Bonnycastle - 1848 - 320 pagine
...the inches in its length ? ^2(375)2=52 inches long, and 52 vibrations. It is proposed to determine the length of a pendulum vibrating seconds, in the latitude of London, where a heavy body falls through 16^ feet in the first second of time t 3.1416 circumference, the diameter... | |
 | Robert Vickers Dixon - 1849 - 338 pagine
...recommended, in preference, Mr. Bird's parliamentary standard, executed in 1760. They further determined that the length of a pendulum vibrating seconds, in the latitude of London, at the level of the sea, and in vacua, was equal to 39.13929 inches measured on this standard; and... | |
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It is determined, we find, as a certain fraction of the length of a pendulum vibrating seconds in the latitude of London. 
