Sthène
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The sthène (symbol sn), sometimes spelled (or misspelled) sthéne[1] or sthene,[2] is an obsolete unit of force in the metre-tonne-second system of units (mts) introduced in France in 1919.[3] The system was soon abandoned in favor of the mks system and has now been superseded by the Système International (SI).[2] It was also used to measure thrust. It is approximately 224 pounds force.
History [edit]
When proposed by the British Association in 1876, it was called the funal, but the name was changed by 1914.[1]
Etymology of the word [edit]
The ultimate derivation is from the Greek σθένος (sthenos), force.[5]
References [edit]
- ^ a b Fenna, Donald (2002). "m. t. s. system". A Dictionary Of Weights, Measures, and Units. Oxford, England: Oxford University Press. p. 281. ISBN 019-860522-6. "sthéne force. Symbol sn. Metric-m.t.s. That which produces an acceleration of 1 m•s-2 when applied to a mass of 1 t[onne] = 1 kN. Originally called the funal when proposed by the British Association in 1876, it was renamed by 1914. It was authorized in France by statute of 1919 as part of the m-t-s- system."
- ^ a b Fenna, Donald (2002). "m. t. s. system". A Dictionary Of Weights, Measures, and Units. Oxford, England: Oxford University Press. p. 190. ISBN 019-860522-6. "m.t.s system (Metric-m.t.s., also MTS system)…In the m.t.s. system the unit of force, for example, is the sthene, which gives an acceleration of 1 m•s-2 to a body of 1 t[onne]…"
- ^ "New units in the metric system—legally adopted in France". Scientific American Monthly. New York: Scientific American. 1920. p. 152. ISSN 0740-6495. OCLC 1765222.
- ^ International conversion tables Stephen Naft, Ralph De Sola, P. H. Bigg - 1965 "Sthène (sn) per square metre. This also equals 10000 dyn/cm2."
- ^ Liddell, Henry; et al (1843). A new Greek and English lexicon. Oxford, England: Oxford University Press. p. 1343. OCLC 23249577.
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