 | John Bonnycastle - Measurement - 1835 - 308 pages
...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.) - Arithmetic - 1837 - 296 pages
...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... | |
 | W. H. CRANK - Arithmetic - 1843 - 340 pages
...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 - Humanities - 1880 - 436 pages
...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 pages
...fathom; 69j\ English miles = 60 nautical or geographical miles; hence a knot or nautical mile = 202 5J yards; 3 nautical miles = 1 league. In Gunter's chain,...is 39-1393 inches. This is the standard of lineal SUPERFICIAL MEASURE.—10 chains in length by 1 in breadth = 10 square chains = 100,000 square links... | |
 | American Academy of Arts and Sciences - Humanities - 1880 - 428 pages
...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 - Geometry - 1848 - 320 pages
...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 - Expansion (Heat) - 1849 - 338 pages
...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... | |
 | Thomas Tate - Mechanical engineering - 1853 - 408 pages
...the accelerating force of gravity. 298. From eq. (4), we get Now it has been found by experiment that a pendulum vibrating seconds, in the latitude of London, is 39-1393 inches; hence we have 0=3-14162x 39-1393=386-3 in.=32-19 ft. which is the velocity acquired by a body descending... | |
 | 1854 - 794 pages
...laws of physical nature operate uniformly, the nnit of measure in England was fixed by ascertaining the length of a pendulum, vibrating seconds, in the latitude of London, at the level of the sea,"* To this length a yard measure was referred, and subdivided into three feet... | |
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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. 
