An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



<< < -ic ice ide ima imp imp inc inc ind ine inf inf inf inh inp ins ins int int int int int int int int inv ion iro ise iso iso Iza > >>

Number of Results: 621
raftomândi (#)

Fr.: intermittent   

Alternately ceasing and beginning again; adj. of → intermittency.

Adjective of → intermittency.

intermittent current
  جریان ِ رفت-و-ماندی   
jarayân-e raftomândi

Fr.: courant intermittent   

A unidirectional electric current that flows and ceases to flow at irregular or regular intervals.

intermittent; → current.

intermolecular force
  نیرو‌ی ِ اندرمولکولی   
niru-ye andarmolekuli

Fr.: force intermoléculaire   

A Force acting between molecules.

inter-; → molecular; → force.

daruni (#)

Fr.: interne   

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").

internal absorption
  درشم ِ درونی   
daršam-e daruni

Fr.: absorption interne   

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.

internal conversion
  هاگرد ِ درونی   
hâgard-e daruni

Fr.: conversion interne   

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.

internal energy
  کاروژ ِ درونی   
kâruž-e daruni

Fr.: énergie interne   

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

internal; → energy.

internal gravity wave (IGW)
  موج ِ گرانی ِ درونی   
mowj-e gerâni-ye daruni

Fr.: onde de gravité interne   

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.

internal photoelectric effect
  اسکر ِ شید-برقی ِ درونی   
oskar-e šid-barqi-ye daruni

Fr.: effet photoélectrique interne   

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.

internal structure of stars
  ساختار ِ درونی ِ ستارگان   
sâxtâr-e daruni-ye setâregân (#)

Fr.: structure interne des étoiles   

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.

internal work
  کار ِ درونی   
kâr-e daruni (#)

Fr.: travail interne   

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

internal; → work.

daruneš (#)

Fr.: intériorisation   

Verbal noun of → internalize.

internalize + → -tion.

darunidan (#)

Fr.: intériorisation   

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

internal + → -ize.

  جهانی، اندرنفانی   
jahâni (#), andarnafâni

Fr.: international, mondial   

Between or among → nations; involving two or more nations. → International Astronomical Union, → International Atomic Time, → International Date Line, and so forth.

International, from → inter- + nation, from O.Fr. nacion, from L. nationem (nom. natio) "nation, stock, race," literally "that which has been born," from natus, p.p. of nasci "be born;" cognate with Pers. zâdangenerate, + → -al.

Jahâni "of or relating to the world" (Fr. mondial), → world.
Andarnafâni, from andar-, → inter-, + nafâni, adj. of nafân "family relation; kinship," proposal for "nation," from naf, from Mid.Pers. nâf "family," nâfag "navel," naft "descendant," Parthian n'p "family" (Mod.Pers. nâf "navel"); Av. nāfa- "navel, near relationship, family," hama.nāfaēna- "of the same family;" cf. Skt. nábhya- "hub (of wheel);" Gk. omphalos "navel;" L. umbilicus "navel;" O.H.G. nabalo "navel;" Ger. Nabel "navel" + -ân suffix denoting family relationship, as in Bâbakân "family of Bâbak."

International Astronomical Union (IAU)
  یکایش ِ جهانی ِ اخترشناسی   
Yekâyeš-e Jahâni-ye Axtaršenâsi

Fr.: Union Astronomique Internationale (UAI)   

An astronomical association of astronomers that is the controlling body of world astronomy. It was founded in Brussels in 1919.

international; → astronomical; → union.

International Atomic Time (TAI)
  زمان ِ اتمی ِ جهانی   
zamân-e atomi-ye jahâni (#)

Fr.: Temps Atomique International (TAI)   

A weighted average of the time kept by about 200 caesium atomic clocks in over 50 national laboratories worldwide. It has been available since 1955, and became the international standard on which UTC is based on January 1972.

international; → atomic; → time.

International Date Line
  خط ِ جهانی ِ گاهداد   
xatt-e jahâni-ye gâhdâd

Fr.: ligne internationale de changement de date   

An imaginary line following approximately the 180th meridian which, by international agreement in 1884, marks the beginning or or end of a day. The regions to the east of which are counted as being one day earlier in their calendar dates than the regions to the west.

international; → date; → line.

International System of Units (SI)
  راژمان ِ جهانی ِ یکاها   
râžmân-e jahâni-ye yekâhâ

Fr.: système international des unités   

The metric system of units based on the → meter, → kilogram, → second, → ampere, → kelvin, and → candela. Also called MSKA system. Other SI units are → hertz, → radian, → newton, → joule, → watt, → coulomb, → volt, → ohm, → farad, → weber, and → tesla.

international; → system; → unit.

International Ultraviolet Explorer (IUE)

Fr.: IUE   

A satellite dedicated to spectroscopic observations of astronomical objects in ultraviolet wavelengths, launched in 1978. It was an international collaboration between → NASA, the → European Space Agency (ESA), and the United Kingdom's Science and Engineering Research Council. It operated until September 1996 and collected over 70,000 spectra. IUE consisted of a 45-cm telescope (f/15) equipped with two spectrographs operating in the ranges 1850-3300 Å and 1150-2000 Å. Each spectrograph had a high-resolution and a low-resolution mode with resolutions of about 0.2 Å and 6 Å respectively.

international; → ultraviolet; → explorer.

International Virtual Observatory Alliance (IVOA)
  همدستی ِ اندرنفانی ِ نپاهشگاه ِ ویر‌آگین   
hamdasti-ye andarnafâni-ye nepâhešgâh-e virâgin

Fr.: Alliance internationale de l'Observatoire Virtuel   

An international cooperation whose objective is to facilitate the international coordination and collaboration necessary for the development and deployment of the tools, systems and organizational structures necessary to enable the international utilization of astronomical archives as an integrated and interoperating → Virtual Observatory. The IVOA, created in 2002, now comprises 20 Virtual Observatory programs from various countries and international organizations.

international; → virtual; → observatory; → alliance.

<< < -ic ice ide ima imp imp inc inc ind ine inf inf inf inh inp ins ins int int int int int int int int inv ion iro ise iso iso Iza > >>