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Riemann curvature tensor tânsor-e xamidegi-ye Riemann Fr.: tenseur de courbure de Riemann A 4th → rank tensor that characterizes the deviation of the geometry of space from the Euclidean type. The curvature tensor R^{λ}_{μνκ} is defined through the → Christoffel symbols Γ^{λ}_{μν} as follows: R^{λ}_{μνκ} = (∂Γ^{λ}_{μκ})/(∂x^{ν}) - (∂Γ^{λ}_{μν})/(∂x^{κ}) + Γ^{η}_{μκ}Γ^{λ}_{ην} - Γ^{η}_{μν}Γ^{λ}_{ηκ}. → Riemannian geometry; → curvature; → tensor. |
scalar-tensor theory negare-ye marpel-tânsori Fr.: théorie scalaire-tensorielle An alternative to the standard → general relativity of gravity that contains not only the → tensor field (or → metric), but also a → scalar field. In this formalism, the → gravitational constant is considered to vary over time. As a consequence, the measured strength of the gravitational interaction is a function of time. Same as → Jordan-Brans-Dicke theory. |
sentence sahân Fr.: 1) phrase; 2) sentence 1) Grammar: A grammatical unit of one or more words that expresses
an independent statement, question, request, command, exclamation,
etc., and that typically has a subject as well as a predicate, as in
John is here. or Is John here? (Dictionary.com). M.E., from O.Fr. sentence "judgment, decision; statement of authority," from L. sententia "thought, opinion; judgment," also "a thought expressed," from sentientem, p.p. of sentire "be of opinion, feel, perceive." Sahân, related to soxan, → speech and pâsox, → response; Mid.Pers saxwan "speech, word;" O.Pers. θa^{n}h- "to declare, say;" Av. səngh- (sanh-) "to declare;" Proto-Ir. *sanh- "to declare, explain;" cf. Skt. śams- "to praise, recite;" L. censere "to estimate, think; decide;" PIE *kens- "to announce, proclaim" (Cheung 2007). |
sentential sahâni Fr.: phrastique Pertaining to or of the nature of a → sentence. |
sentential logic guyik-e sahâni Fr.: logique des propositions, ~ phrastique Same as → propositional logic. → sentential; → logic. |
skew-symmetric tensor tânsor-e pâdhamâmun Fr.: tenseur antisymétrique A tensor that is the negative of its → transpose. For example, a second-order covariant tensor A_{jk} if its components satisfy the equality: A_{jk} = - A_{kj}. Also called antisymmetric tensor. |
sound intensity dartanuyi-ye sedâ Fr.: intensité de son The average → sound power passing through a unit area perpendicular to the direction that the sound is traveling. It is usually expressed in watts per square meter. |
sound intensity level tarâz-e dartanuyi-ye sedâ Fr.: niveau de l'intensité de son The expression of sound intensity in decibel units. The sound intensity level (L_{I}), in decibels, is computed as: L_{I} = 10 log (I/I_{0}), where I is the measured sound intensity and I_{0} is the reference intensity (1 x 10 ^{-12} watt per square meter). |
specific intensity dartanuyi-e âbizé Fr.: intensité spécifique A measure of the amount of radiation received per unit solid angle per unit time per unit area normally from an element of surface. |
subtend zirtânidan Fr.: sous-tendre To be opposite and delimit the extent of an angle or side of a geometric figure. From L. subtendere "to stretch beneath," from → sub- + tendere "to stretch," cognate with Pers. târ "string," tanidan "to weave," as below. Zirtânidan from zir-, → sub-, + tânidan from tân "thread, warp of a web," tâl "thread" (Borujerdi dialect), târ "thread, warp, string," related to tur "net, fishing net, snare," from tanidan, tan- "to spin, twist, weave;" Mid.Pers. tanitan; Av. tan- "to stretch, extend;" cf. Skt. tan- to stretch, extend;" tanoti "stretches," tántra- "warp; essence, main point;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch, as above; Lith. tiñklas "net, fishing net, snare," Latv. tikls "net;" PIE base *ten- "to stretch." |
subtended angle zâvie-ye zirtânidé Fr.: angle sous-tendu An angle whose two sides pass through the endpoints of an arc. |
surface tension taeš-e ruye-yi Fr.: tension superficielle The inward → attraction of the → molecules at the → surface of a → liquid. The reason is that the molecules at the surface do not have other like molecules on all sides of them and consequently they cohere more strongly to those directly associated with them on the surface. Also called surface energy and capillary forces. |
symmetric tensor tânsor-e hamâmun Fr.: tenseur symétrique A tensor that is → invariant under any → permutation of its indices (→ index). In other words, a tensor that equals its → transpose. For example, a second-order → covariant tensor A_{jk} if its components satisfy the equality: A_{jk} = A_{kj}. |
ten dah (#) Fr.: dix A cardinal number, nine plus one. M.E. ten(e), tenn(e), O.E. ten(e), tien(e); from P.Gmc. *tekhan (cf. O.S. tehan, O.N. tiu, Dan. ti, Du. tien, O.H.G. zehan, Ger. zehn "ten"), cognate with Pers. dah, as below. Dah, from Mid.Pers. dah "ten;" Av. dasa "ten;" cf. Skt. dáśa- "ten;" Gk. deka "ten;" L. decem "ten;" O.Ir. deich; Lith. dešimtis "ten;" PIE base *dekm. |
tense tanu Fr.: tendu Stretched tight, as a cord, fiber, etc.; drawn taut; rigid. From L. tensus, p.p. of tendere "to stretch," → tension. Tanu "stretched, strained," from tan + -u suffix of excess. The first element tan, from tanidan "to spin, twist, weave" (Mid.Pers. tanitan; Av. tan- to stretch, extend;" cf. Skt. tan- to spin, stretch;" tanoti "stretches," tantram "loom;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch;" PIE base *ten- "to stretch"), Pers. târ "string," tân "thread," tur "fishing net, net, snare," and tâl "thread" (Borujerdi dialect) belong to this family; variants tanta "cobweb," tanadu, tafen, kartané, kârtané, kâtené, Pashtu tanistah "cobweb;" cf. Skt. tantu- "cobweb, thread, string"). |
tensile taneši (#) Fr.: extensible Of or pertaining to → tension. From M.L. tensilis "capable of being stretched," from L. tensus, p.p. of tendere "to stretch," → tension. Taneši, related to taneš, → tension. |
tensile force niruy-e taneši Fr.: force de traction The force tending to stretch (or produce tension in) an object |
tension taneš (#) Fr.: tension General: The act of stretching or straining; the state of being
stretched or strained. M.E., from M.Fr. tension, from L. tensionem (nominative tensio) "a stretching," from tensus, p.p. of tendere "to stretch," cognate with Pers. taneš, as below. Taneš, verbal noun from tanidan "to spin, twist, weave;" Mid.Pers. tanitan; Av. tan- to stretch, extend;" cf. Skt. tan- to spin, stretch;" tanoti "stretches," tantram "loom;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch;" PIE base *ten- "to stretch"), Pers. târ "string," tân "thread," tur "fishing net, net, snare," and tâl "thread" (Borujerdi dialect) belong to this family; variants tanta "cobweb," tanadu, tafen, kartané, kârtané, kâtené, Pashtu tanistah "cobweb;" cf. Skt. tantu- "cobweb, thread, string." |
tensor tânsor, tângar Fr.: tenseur A system of numbers or functions where components obey a certain law of
transformation when the variables undergo a linear transformation.
A tensor may consist of a single number, in which case it is
referred to as a tensor of order zero, or simply a → scalar.
The tensor of order one represents a → vector.
Similarly there will be tensors of order two, three, and so on. Agent noun of tense (v.) → tension. |
tensor analysis ânâlas-e tânsori Fr.: analyse tensorielle A method of calculation in higher mathematics based on the properties of tensors. |
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