 | 1880 - 436 страница
...Endeavors to find a Standard of Length. 1798, page 186, &c. Hater's Account of Experiments for determining the Length of a Pendulum vibrating Seconds in the Latitude of London. 1818, page 33, &c. Kateron the Length of the French Metre as compared with Shuckburgh's Scale, 0- 39.4... | |
 | Joseph Hughes (F.R.G.S.) - 1882 - 114 страница
...a resolution of a Committee of the House, arrived at in 1814, and dealing with the subject : — ' The length of a pendulum vibrating seconds in the latitude of London has been ascertained to be 39-13047 inches, of which the standard yard contains thirty-six.' By-and-bye,... | |
 | Richard Anthony Proctor - 1882 - 444 страница
...inches, or parts of a cubic inch, of that substance. An inch is determined as a certain fraction of the length of a pendulum vibrating seconds in the latitude of London. A second is a certain port1on of a mean solar day, and is practically determined by a reference to... | |
 | Richard Anthony Proctor - 1883 - 380 страница
...inches, or parts of a cubic inch, of that substance. An inch is determined as a certain fraction of the length of a pendulum vibrating seconds in the latitude of London. A second is a certain portion of a mean solar day, and is practically determined by a reference to... | |
 | William Waterston - 1884 - 314 страница
....Standard Yard," or brass "standard yard of 17<ii>," bearing the proportion of 36 inches to 39.1393 inches, the length of a pendulum vibrating seconds in the latitude of London at 62° Fahrenheit, and in a vacuum at the level of the sea. 2. Capacity — The " imperial Standard... | |
 | Richard Anthony Proctor - 1887 - 364 страница
...inch, of that substance. But what is an inch ? It is determined, we find, as a certain fraction of the length of a pendulum vibrating seconds in the latitude of London. A second, we know, is a certain portion of a mean solar day, and is practically determined by a reference... | |
 | Edward Charles Pickering - 1888 - 816 страница
...Endeavors to find a Standard of Length. 1798, page 185, &o. Hater's Account of Experiments for .determining the Length of a Pendulum vibrating Seconds in the Latitude of London. 1818, page 33, &c. Katcr on the Length of the French Metre as compared with-Shuckburgh's Scale, 0-30.4... | |
 | Royal Society (Great Britain) - 1905 - 270 страница
...died. The Society took a very active part in the measurement of a degree of latitude, afterwards in the length of a pendulum vibrating seconds in the latitude of London, and in the comparison of the British Standards with the Linear Measure adopted in France. A committee... | |
 | 1902 - 1282 страница
...Standard Yard," or brass " standard yard of 1760," bearing the proportion of 30 inches to 30'1393 inches, the length of a pendulum vibrating seconds in the latitude of London at C2° Fahrenheit, and in a vacuum at the level of the sea. 2. Capacity.— The " Imperial Standard... | |
 | Augustus Jay Du Bois - 1902 - 682 страница
...destroyed by fire in 1834. It had been originally defined as having at 62° Fah. a length of • i ,3y j of the length of a pendulum vibrating seconds in the latitude of London at the sea-level. But this provision for its restoration was repealed and a new standard bar was constructed... | |
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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. 
