energy level tarâz-e kâruž Fr.: niveau d'énergie Any of the several discrete states of energy which a particle, atom, or molecule can adopt under conditions where the possible values are restricted by quantum mechanical laws. |
Fermi level tarâz-e Fermi Fr.: niveau de Fermi A measure of the → energy of the least tightly held → electrons within a → solid at a → non-zero → temperature. The value of the Fermi level at → absolute zero (-273.15 °C) is called the → Fermi energy and is a constant for each solid. In other words, the Fermi level is any → energy level having the probability that it is exactly half filled with electrons in the → Fermi-Dirac statistics. Levels of lower energy than the Fermi level tend to be entirely filled with electrons, whereas energy levels higher than the Fermi tend to be empty. |
Landau level tarâz-e Landau Fr.: niveau de Landau The → energy level which can be occupied by a → free electron in a → magnetic field. → Landau damping; → level. |
level tarâz (#) Fr.: niveau A position with respect to a given or specified base. → energy level. From O.Fr. livel, from L. libella "a balance, level," diminutive of libra "balance, scale." Tarâz "level; a level," from tarâzu "balance, scales," Mid.Pers. tarâzên-, taraênidan "to weigh," Proto-Iranian *tarāz-, from *tarā- "balance, scale" ( cf. Skt. tulā- "scales, balance, weight," from tul- "to weigh, make equal in weight, equal," tolayati "weighs, balances," L. tollere "to raise," Gk. talanton "balance, weight," Atlas "the Bearer" of Heaven," Lith. tiltas "bridge;" PIE base telə- "to lift, weigh") + Av. az- "to convey, conduct, drive," azaiti drives" (cf. Skt. aj- "to dive, sling," ájati "drives," ajirá- "agile, quick," Gk. agein "to lead, guide, drive, carry off," L. agere "to do, set in motion, drive," from PIE root *ag- "to drive, move," → act). |
level of significance tarâz-e nešânâri Fr.: niveau de significativité Same as → significance level. → level; → significance. |
occupied level tarâz-e hagidé Fr.: niveau occupé The energy level adopted by a particle, atom, or molecule under quantum mechanical laws. |
significance level tarâz-e nešânâri Fr.: niveau de significativité The level of → Type I error which one is willing to risk in a → test of significance. Also called level of significance. → significance; → level. |
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). |
sound power level tarâz-e tavân-e sedâ Fr.: niveau de la puissance de son The sound energy emitted by a sound source per unit time and expressed in → decibels. Sound power, in → watts, is converted to sound power level in decibels (L), by L = 10 log (W/W_{0}), where W_{0} is the reference power (1 x 10 ^{-12} watt). |
splitting of energy level fâqeš-e tarâz-e kâruž Fr.: dédoublement d'un niveau d'énergie The splitting of a single atomic level into a group of closely spaced levels when the substance producing the single line is subjected to a uniform magnetic field. → Zeeman effect; → Stark effect. → spliting; → energy level. |
upper level tarâz-e bâlâ (#), ~ zabarin (#) Fr.: niveau supérieur In atomic physics, an initial energy state in an emission transition. |