Seconds Pendulum
CHF 45.70
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SKU
SNLT49RGSEG
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Geliefert zwischen Mi., 15.10.2025 und Do., 16.10.2025
Details
A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 1/2 Hz. At standard gravity its length is 0.994 m (39.1 in). This length was determined (in toises) by Marin Mersenne in 1644. In 1660, the Royal Society proposed that it be the standard unit of length. In 1675 Tito Livio Burattini proposed that it be named the meter. In 1790, one year before the metre was ultimately based on a quadrant of the Earth, Talleyrand proposed that the metre be the length of the seconds pendulum at a latitude of 45°. This option, with one-fifth of this length defining the foot, was also considered by Thomas Jefferson and others for redefining the yard in the United States shortly after gaining independence from the British Crown.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786137908846
- Genre Technik
- Auflage Aufl.
- Editor Ferdinand M. Quincy
- Anzahl Seiten 104
- Herausgeber Betascript Publishing
- Größe H220mm x B220mm
- EAN 9786137908846
- Titel Seconds Pendulum
- Untertitel Pendulum, Standard Gravity
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