Fr.: coefficient de recombinaison
A measure of the specific rate at which oppositely charged ions join to form neutral particles. It is given by the rate at which those ions recombine, divided by the product of the densities of the two species involved.
Fr.: continuum de recombinaison
A recombination radiation that is continuous over a range of frequencies. Same as → continuum emission.
Fr.: époque de recombinaison
Same as → recombination era.
Fr.: ère de recombinaison
The era some 380,000 years after the → Big Bang (at a → redshift of about 1,100), when the Universe had cooled sufficiently so that protons and electrons combined to form → neutral hydrogen in a process called → recombination. The temperature was about 3,000 K and the ionization fraction low enough for Universe to become transparent to light. Consequently matter and radiation decouple from one another because no further → scattering of the radiation occurs. The observation of the → cosmic microwave background radiation provides a means of studying the Universe at the recombination era. Also called recombination epoch and → decoupling era.
Fr.: raie de recombinaison
An → emission line in a spectrum produced in an → H II region when a free electron combines with an ionized atom to form a neutral atom or an ion of lower → ionization stage. Same as → free-bound emission.
Fr.: rayonnement de recombinaison
Radiation produced when a free electron in a plasma is captured by an ionized atom.
Fr.: taux de recombinaison
Fr.: temps de recombinaison
Fr.: recombiner, se recombiner
To combine or put together again. To undergo or cause recombination.
1) vâgat; 2) vâgatidan
Fr.: 1) enregistrement; 2) enregistrer
1a) An act of recording.
From M.E. recorden "to repeat, to report," from O.Fr. recorder "to get by heart," from L. recordari "to call to mind, remember," from → re- "back, again" + cor "heart" (as the metaphoric seat of memory, as in learn by heart).
Vâgat literally "to take, seize, to take back," cf. Ger. aufnehmen "to record," from nehmen "to take;" E. "take down" "to note down;" Šahmirzâdi vagatan "to take," Lâhijâni vitan "to take, seize," Aftari veytu "to take," Delijâni bitan "to take," var of Tâleši gate, Târi gata/ger, Sorxeyi gil, variants of gereftan, → concept.
Râstgušé, from râst, → right, + gušé "corner, angle;" Mid.Pers. gôšak "corner."
Having the base or section in the form of a rectangle. Shaped like a rectangle.
Adj. of → rectangle.
Fr.: fenêtre rectangulaire
A → window function that is constant inside a specified interval.
1) Math.: The process of determining the length of a curve.
Verbal noun of → rectify.
Fr.: spectre rectifié
A spectrum after correction for detector's → baseline.
Agent noun of → rectify.
1) General: To make, put, or set right; to correct.
M.E. rectifien, from O.Fr. rectifier "to make straight," from L.L. rectificare "make right," from L. rectus "straight," cognate with Pers. râst, as below, → right + root of facere "to make, do, perform" (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Mod.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives; puts;" Skt. dadáti "puts, places;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Czech diti, Pol. dziac', Rus. det' "to hide," delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do").
Râstidan, literally "to make straight, right," infinitive from râst cognate with L. rectus "straight," → right.
In a straight line; consisting of straight lines. → curvilinear
rectilinear propagation of light
tuceš-e râst-xatt-e nur
Fr.: propagation rectiligne de la lumière
The motion of light in the first approximation, as evidenced from the formation of shadows and other every day experience. However, → diffraction
Fr.: système rectilinéaire