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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 13116 Search : far
intermittency
  رفت-و-ماند   
raftomând (#)

Fr.: intermittence   

A property of a turbulent dynamical system which is characterized by chaotic, irregular behavior occurring between quiet (or less irregular) periods. In other words, a → turbulent flow having a large → Reynolds number undergoes a phenomenon in which its turbulent activity at a fixed location stops from time to time and starts again. In fact → turbulence never completely disappears, but it can become extremely weak interrupted irregularly by bursts of strong turbulence (see also → developed turbulence). For intermittent flows → probability density functions are not → Gaussian. Turbulent intermittency plays a fundamental role in fields ranging from combustion physics, chemical engineering, meteorology, to astrophysical systems, more specifically the → interstellar medium.

From L. intermittent, pr.p. of intermittere "to leave a space between, drop (for a while), leave off," from → inter- + mittere "to send, let go."

Raftomând, literally "to go and to stop," from raft past stem of raftan "to go, walk, proceed" (present stem row-); Mid.Pers. raftan, raw-, Proto-Iranian *rab/f- "to go; to attack") + -o- euphonic infix + mând past stem of mândan "to remain, stay, relinquish, leave" (Mid.Pers. mândan "to remain, stay," mân "house, home;" O.Pers. mān- "to remain, dwell;" Av. man- "to remain, dwell; to wait;" cf. Gk. menein "to remain;" L. manere "to stay, remain, abide," mansio "a staying, a remaining, night quarters, station" (Fr. maison, ménage; E. manor, mansion, permanent; PIE *men- "to remain, wait for").

intermittent
  رفت-و-ماندی   
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.

internal
  درونی   
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.

internalization
  درونش   
daruneš (#)

Fr.: intériorisation   

Verbal noun of → internalize.

internalize + → -tion.

internalize
  درونیدن   
darunidan (#)

Fr.: intériorisation   

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.

international
  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.

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer aga air Alf Alg alk Alp alt alu amm ana And ang ani ano ant ant Ap apo app app Aqu Arc arg arr asc ass ast ast asy atm ato att aur aut axi B-m bad Bal bar bar Bay Bed ber Bet bif bim bin bio bis bla ble blu Bod Bol bor bou Bra Bre bro bul C-t Cal Cam can car Car Cas cat cav cel cen cer Cha cha Cha che chl Cir cir cir Cla cli clo clu co- coc coh col col col Com com com com com com com com Com con con con con con con con con con con con con coo Cor Cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl Dan dat Dav de- Deb dec dec dee def deg del Den den der det deu dew dic dif dif dil Dip dir dis dis dis dis dis diu dod Dop dou Dra dua dus dwa dyn DZ Ear ecc eco edi EHB Ein ela ele ele ele ele ell eme emp end Eng ent epi equ equ era ESP eth Eur evi exa exc exe exi exp exp ext ext ext fac fal far fec Fer fer fie fin fir fis fla Flo flu fog for for Fou fra fre fre Fro fun G s Gal gal gal Gar gau geg gen geo geo geo ger gla gly gra gra gra gra gra Gre gro GYR Had Hal hap Har HD hea hel hel Hen Her hex hig Hil hol Hoo hor hou Hub hum hyb hyd hyd hyp hys ide ign ima imp imp in- inc Ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jor jum K c Kep Ker kin kno lab Lam Lan Lap las lat Le lef len lev lig lig lin lin lin liq Lit loc log lon lou LS lun lun Lym M s Mag mag mag mag mag mag maj man Mar mas mas mat May mea mec mel mer mes met met met mic mid mil Min Mir mix mod mod mol mon mor mov mul mur mys nan nat nav nec Nep neu New New NGC nob nom non non nor nos nuc nuc num nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi P-w pal par par par par Pas pat pej per per per per per per pha Phe pho pho pho phy pin pla Pla pla pla pla plu poi pol pol Pol pol por pos pot Poy pre pre pre pre pri pri pri pro pro pro pro pro pro Psa pul pum Q i qua qua qua qua R A rad rad rad rad rad rad Ram Ran rat rea rea rec rec red red ref ref reg rei rel rel rem rep res res res ret rev Rho Rie ril riv rog Ros rot rul S A Sag sam sat sca sca Sch Sco Sec sec sec seg sel sem sen set Sha sha shi sho sid sig sim sin Sir ske sli Smo soc sof sol sol sol sol sou sou spa spe spe Spe spe sph spi Spi spr sta sta sta sta sta ste ste ste Sto str str sub sub sub suc sun sup sup sup sup sur swa syn syn tac tas tel tem ter tes the the the the thi thr tid til tip ton tor tou tra tra tra tra Tri tri tru tsu tur two Typ UHE ult unc uni uni uni upg ura uti val var vec Vel ver Ver vie Vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>