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A → proposition, → statement, or → formula in → mathematics or → logic deduced or to be deduced from other propositions, → assumptions, → premises, or formulas; e.g. → Fourier theorem; → Liouville's theorem; → Woltjer's theorem.
From M.Fr. théorème, from L.L. theorema, from Gk. theorema "spectacle, speculation," in Euclid "proposition to be proved," from theorein "to look at, speculate, consider."
Farbin, from far- intensive prefix "much, abundant; elegantly; forward" (Mid.Pers. fra- "forward, before; much; around;" O.Pers. fra- "forward, forth;" Av. frā, fərā-, fra- "forward, forth; excessive;" cf. Skt. prá- "before; forward, in front;" Gk. pro "before, in front of;" L. pro "on behalf of, in place of, before, for;" PIE *pro-) + bin, present stem of didan "to see," from Mid.Pers. wyn-; O.Pers. vain- "to see;" Av. vaēn- "to see;" cf. Skt. veda "I know;" Gk. oida "I know," idein "to see;" L. videre "to see;" PIE base *weid- "to know, to see."
Of, pertaining to, or consisting in theory.
From L.L. theoreticus "of or pertaining to theory," from Gk. theoretikos "contemplative, pertaining to theory;" → theory.
axtarfizik-e negarik (#)
Fr.: astrophysique théorique
An astrophysical study or research group mainly concerned with theory rather than observation.
One who formulates or is expert in the theoretical side of a subject.
From theoretic, from theoretics, from → theory + -ian.
Negare-pardâz, from negaré, → theory, + pardâz, present stem of pardâxtan "to accomplish; bring to perfection; to attempt, to care; to clean; to free;" Mid.Pers. pardâxtan, pardâzidan "to accomplish; to be done with, freed of" ultimately from Proto-Iranian *para-tāxta-, *para-tāca- "to take away; to expel," from *para- "along, forth," → para-, + tāxta-, tāca- "to run, to flow;" cf. Av. tak- "to run, to flow;" Mod.Pers. tâxtan, tâz- "to flow, to cause to walk," → flow.
Same as → theoretician.
From theor-, from → theory + -ist a suffix of nouns, often corresponding to verbs ending in -ize or nouns ending in -ism.
A coherent set of verified facts, propositions, or principles analyzed in their relation to one another and used to explain and predict phenomena, e.g. the → theory of relativity. The criterion of the scientific status of a theory is its → falsifiability, → refutability, or → testability. See also → hypothesis, → model.
From L.L. theoria, from Gk. theoria "contemplation, speculation, a looking at, things looked at," from theorein "to consider, view, look at," from theoros "spectator," from thea "a view" + horan "to see."
Negaré, from negar present stem of negaridan, negaristan "to look, observe;" Mid.Pers. nigeridan, niger-, nikiritan, nikir- "to look, to watch, to notice, to consider;" ultimately from Proto-Iranian *ni-kar-, from *ni- "down, in, into," → ni- (PIE), + *kar- "to observe, to consider;" cf. Av. kar- "to remember; to impress on memory;" Skt. kal- "to observe, consider," kalayati "considers, observes;" Mid.Pers. kartan "to establish; to declare; to found," (h)angârtan "to consider, to bear in mind, to regard as," us-kâritan "to consider, deliberate, discuss," sikâl, sigâl "thought;" Mod.Pers. engâridan, engâštan "to suppose," segâl "thought," segâlidan "to think, to resolve to injure, to deceive."
theory of everything (TOE)
negare-ye hamé ciz
Fr.: théorie du tout
theory of relativity
Fr.: théorie de la relativité
Any of several commercial units of heat energy, as one equivalent to 106 calories.
From Gk. therme "heat," → thermal.
Of, pertaining to, or caused by heat or temperature.
From M.Fr. thermal, from Gk. therme "heat," cognate with Pers. garm "warm," as below.
Garmâyi, adj. of garmâ "heat, warmth," from Mid.Pers. garmâg; O.Pers./Av. garəma- "hot, warm;" cf. Skt. gharmah "heat;" cognate with Gk. therme, thermos, as above; PIE *ghworm-/*ghwerm- "warm."
Fr.: agitation thermique
1) The random movement of the molecules of a substance, the energy of which is,
by kinetic theory, synonymous with the heat content of the substance.
Fr.: bremsstrahlung thermique
The emission of electromagnetic radiation from high temperature plasma, produced as electrons are deviated by positive ions. Same as → free-free emission
Fr.: conduction thermale
A process that occurs in a medium where a → temperature gradient exists: dQ = -κ(dT/dx)dA.dt, where dQ is the amount of heat passing through the time dt across an area dA in the direction of the normal x to this area and toward the reduction in temperature, κ is the → thermal conductivity, and (dT/dx) the temperature gradient.
Fr.: conductivité thermale
Fr.: détecteur thermique
A detector that senses the change of temperature due to the absorption of photons.
Fr.: diffusion thermique
A physical process resulting from → temperature gradients in stellar interiors, whereby more highly charged and more massive chemical species are concentrated toward the hottest region of the star, its center. Therefore, thermal diffusion and → gravitational settling tend to make heavier species sink relative to the light ones.
gosil-e garmâyi (#)
Fr.: émission thermique
Fr.: énergie thermique
1) The energy in the form of heat emitted by an object by virtue of its temperature.
tarâzmandi-ye garmâyi (#)
Fr.: équilibre thermique
In thermodynamics, the state of a system all parts of which have attained a uniform temperature and no net heat exchange is taking place between it and its surroundings. If two bodies are in thermal equilibrium, they have the same temperature. Thermal equilibrium is the central criterion of the → zeroth law of thermodynamics. See also → local thermodynamic equilibrium (LTE).
Fr.: excitation thermique
A process in which collisions that occur between particles cause atoms or molecules to obtain additional kinetic energy.