An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Situated or occurring in the interior of something; interior.

From M.L. internalis, from L. internus "within," from inter "between," → inter-.

Daruni, adj. of darun " in, into; within" (Mid.Pers. andarôn "inside," from andar, → inter-, + rôn "side, direction;" Av. ravan- "(course of a) river").

Of an → H II region, the absorption of photons by the dust which is mixed with ionized gas, in contrast to the absorption by the → interstellar dust on the line of sight.

→ internal; → absorption.

A → radiationless relaxation process in which a molecule in some excited → electronic state converts to a state of the same → multiplicity but of lower electronic energy and in which the lost electronic energy is converted initially into vibrational energy.

→ internal; → conversion.

The difference between the energy added to a system and the energy given up by the system in performing work.

→ internal; → energy.

A wave generated inside a density-stratified fluid under the influence of → buoyancy forces. Known also as → gravity wave or internal wave.

→ internal; → gravity; → wave.

The → photoelectric effect whereby photons absorbed by a solid (→ semiconductor) raise electrons from a lower to a higher → energy level (from → valence band to → conduction band). See also → external photoelectric effect.

→ internal; → photoelectric; → effect.

The physical characteristics of that part of a star lying below the → photosphere. More specifically, the study of its various zones (→ core, → convective zone, → radiative zone) and the transfer of energy through them.

→ internal; → structure; → star.

Work done in separating the molecules of a system against their forces of attraction. Its value is zero for an → ideal gas.

→ internal; → work.

Verbal noun of → internalize.

→ internalize + → -tion.

1) To incorporate (the cultural values, mores, motives, etc., of another or of a group), as through learning, socialization, or identification (Dictionary.com).
2) Linguistics: To acquire (a linguistic rule, structure, etc.) as part of one's language competence (Dictionary.com).

→ internal + → -ize.

A phenomenon occurring when a light ray traveling cross an → interface from a higher → refractive index medium to a lower refractive index medium hits the interface at an angle larger than the → critical angle. In these conditions the light will not pass through to the second → medium at all. Instead, all of it will be reflected back into the first medium.

→ total; → internal; → reflection.