Fr.: processus de mélange
A process whereby → angular momentum and chemical species are transported from layer to layer within a star. The main mixing processes include: → convection, → overshooting, → rotation, and → turbulence. The extent to which the interiors of stars are mixed strongly influences their evolution, age, chemical content, and the relationship between their internal and surface → chemical abundances.
Fr.: processus non radiatif
An process in which an excited state returns to the ground state without emitting radiation. → radiative process.
Fr.: processus nucléaire
Fr.: processus nucléosynthétique
Fr.: processus de Penrose
A hypothetical means of extracting energy from a rotating black hole. If a particle spirals into the ergosphere of a black hole in a direction counter to the rotation of the black hole, and if the particle then breaks up into two fragments inside the ergosphere, one of the fragments can escape with energy greater than the energy of the original particle.
Named after Roger Penrose, English physicist (1931-), who devised the process; → process.
Fr.: processus polytropique
A thermodynamic process that obeys the relation:
PVn = C, where P is pressure, V is volume,
n is any real number, called the → polytropic index, and
C is a constant.
1) farâravand (#); 2) âmudan (#), âmâyidan (#)
Fr.: 1) processus; 2) traiter
1) (n.) A series of actions directed toward a specific aim.
M.E., from O.Fr. proces, from L. processus "advance, progress," from p.p. stem of procedere "go forward," from → pro- "forward" + cedere "to go."
1) Farâravand, from farâ- "forward" → pro- +
ravand, contraction of ravandé "goer, going," from raftan
"to go, walk;" Mid.Pers. raftan, raw-, Proto-Iranian *rab/f-
"to go; to attack."
Noun of the verb → process.
The act of moving along or proceeding in orderly succession or in a formal and ceremonious manner, as a line of people, animals, vehicles, etc (Dictionary.com).
Verbal noun from → process.
Agent noun of the verb → process.
Fr.: processus r
A → nucleosynthesis process in which → chemical elements heavier than → zinc are created through the intense bombardment of other elements by → neutrons in rapid succession. The essential feature of the r-process is the release of great numbers of neutrons in a very short time (less than 100 seconds). The r-process is a "rapid" version of the → s-process, occurring in supernova → core collapse and possibly when a → neutron star merges with a → black hole in a → binary star.
r stands for rapid, since the process entails a succession of rapid neutron captures on iron seed nuclei; → process.
Fr.: processus radiatif
An process in which an excited state loses its absorbed energy by emission of radiation. → non-radiative process.
âmâyeš dar zamân-e hasyâ
Fr.: traitement en temps réel
Data processing that takes place instantaneously upon data entry or receipt of a command.
farâravand-e vâgaštpazir (#)
Fr.: processus réversible
Any physical process which can be performed in the reverse direction, the whole series of changes constituting the process being exactly reversed. → irreversible process.
Fr.: processus s
A → nucleosynthesis process by which → chemical elements heavier than → copper are formed through a slow flux of → neutrons absorbed by atomic nuclei (→ neutron-capture element). The → capture of neutrons occurs on time scales that are long enough to enable unstable nuclei to decay via the emission of a → beta particle before absorbing another neutron. Prominent s-process elements include → barium, → zirconium, and → yttrium. See also: → r-process.
Fr.: processus de Salpeter
An equation describing how the nuclei of helium fuse together, in the interior of giant stars, to form carbon nuclei. → triple-alpha process.
Named after the Austrian-Australian-American astrophysicist Edwin Ernest Salpeter (1924-2008); → process.
Fr.: processeur scalaire
Computers: A type of central processing unit in which only one operation on data is executed at a time. By contrast, in a vector processor, a single instruction operates simultaneously on multiple data items.
Fr.: processus auto-similaire
A process that is invariant in distribution under scaling of time. Schematically, images taken of such a process at different time scales will look similar.
Fr.: processus stochastique
Any process involving a sequence of random variables. The future evolution of a stochastic process is therefore described by probability distributions.
Fr.: processus thermodynamique
An ordered set of → equilibrium states undergone by a → thermodynamic system. Thermodynamics processes have various types: → cyclic process, → reversible process, and → irreversible process, → isothermal process, → adiabatic process, → isentropic process.