An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 13176 Search : in
Compton suppression
  نهاوش ِ کامپتون   
nehâveš-e Compton

Fr.: suppression de Compton   

In → gamma ray → spectroscopy, a technique to reduce the contribution of gamma rays generated by → Compton scattering.

Compton; → suppression.

Compton wavelength
  موج-طول ِ کامپتون   
mowjtul-e Compton, tul-e mowj-e ~

Fr.: longueur d'onde de Compton, longueur d'onde Compton   

The quantum wavelength of a particle with a highly relativistic velocity. The Compton wavelength is given by h/mc, where h is Planck's constant, m is the mass of the particle, and c the light speed. For an electron, the Compton wavelength is about 2.4 × 10-10 cm, intermediate between the size of an atomic nucleus and an atom.

Compton; → wavelength.

Comptonization
  کامپتونش   
Kâmptoneš

Fr.: comptonisation   

The change in the → spectrum of → electromagnetic radiation due to → scattering from → electrons. When → photons and electrons coexist in the same volume of space, their → collisions can → transfer energy from photons to electrons (→ Compton effect) or from electrons to photons (→ inverse Compton effect).

Verbal noun of → Comptonize; → -tion.

Comptonize
  کامپتونیدن   
Kâmptonidan

Fr.: comptoniser   

The verb describing the → Camptonization process.

Compton; → -ize.

Comptonized emission
  گسیل ِ کامپتونیده   
gosil-e Kâmptonidé

Fr.: émission comptonisée   

Emission undergone → Comptonization.

Comptonize; → emission.

compulsion
  وادارش، وادارکرد   
vâdâreš, vâdârkard

Fr.: obligation   

The action or state of forcing or being forced to do something; constraint (OxforddDctionaries.com).

M.E., from O.Fr. compulsion, from L. compulsion-, noun of action from past-participle stem of compellere, → compel.

Verbal noun from vâdâridan, vâdâr kardan, → compel.

compulsory
  وادارشی، وادارکردی   
vâdâreši, vâdârkardi

Fr.: obligatoire   

Required by law or a rule; obligatory; involving or exercising compulsion; coercive (OxforddDctionaries.com).

From M.L. compulsorius, from L. compulsus, p.p. of compellere, → compel.

Adjective from vâdâreš, vâdârkard, → compulsion.

computation
  حساب   
hesâb (#)

Fr.: calcul   

The act, process, or method of calculating.

Verbal noun of → compute.

compute
  حسابیدن   
hesâbidan (#)

Fr.: calculer   

To determine by calculation, especially by numerical methods; to determine by using a computer or calculator. See also → calculate.

From Fr. computer, from L. computare "to count, sum up," from → com- "with" + putare "to prune, clean, settle an account, think over, reflect;" PIE base *pau- "to cut, strike, stamp."

Hesâbidan, from Ar. hesâb "reckoning, computation," + infinitive suffix -idan.

computer
  رایانگر   
râyângar (#)

Fr.: ordinateur   

An electronic device which can accept data, apply a series of logical instructions rapidly, and supply the results of the processes as information.

From → compute + suffix → -er.

Râyângar "arranger, organizer," on the model of Fr. ordinateur according to which the electronic device arranges/organizes instructions and information. Râyângar, from râyân- stem of râyânidan "to regulate, set in order," from Mid.Pers. râyânīdan "to arrange, organize" + -gar agent suffix. Râyân-, from rây-, Mod.Pers. ârây-, ârâyeš, ârâyidan "to arrange, adorn," Mid.Pers. ârây-, ârâstan "to arrange, adorn;" O.Pers. rād- "to prepare," rās- "to be right, straight, true," rāsta- "straight, true" (Mod.Pers. râst "straight, true"); Av. rāz- "to direct, put in line, set," razan- "order;" Gk. oregein "to stretch out;" L. regere "to lead straight, guide, rule," p.p. rectus "right, straight;" Skt. rji- "to make straight or right, arrange, decorate;" PIE base *reg- "move in a straight line;" see also → direct.

computer virus
  ویروس ِ ازداییک، ~ رایانگر   
virus-e azdâyik, ~ râyângar

Fr.: virus informatique   

A segment of self-replicating code planted illegally in a computer program, often to damage or shut down a system or network (Dictionary.com).

computer; → virus.

computerization
  رایانگرش، رایانگرانش   
râyângareš, râyângarâneš

Fr.:   

The process or state of computerizing.

computerize.

computerize
  رایانگریدن، رایانگراندن   
râyângaridan, râyângarândan

Fr.:   

To control, perform, process, or store by means of or in an electronic computer or computers.

From → computer + verb forming suffix → -ize.

concave
  کاو   
kâv (#)

Fr.: concave   

Of a surface, curving inward.

From L. concavus "hollow," from → com- intensive prefix + cavus "hollow;" PIE base *keu- "a swelling, arch, cavity."

Kâv "hollow," verb kâvidan (kâftan) "to dig; to examine, investigate," cf. L. cavus "hollow" (E. derivatives: cavity, concave, cave, excavate), Gk. koilos "hollow," Armenian sor; PIE *kowos "hollow."

concave grating
  توری ِ کاو   
turi-ye kâv (#)

Fr.: réseau concave   

A → diffraction grating ruled on a concave spherical mirror that eliminates chromatic aberration and transmits regions of the spectrum, such as the ultraviolet, which is not transmitted by glass lenses.

concave; → grating.

concave lens
  عدسی ِ کاو   
adasi-ye kâv (#)

Fr.: lentille concave   

A lens which is thinner at the center than at the edges and diverges the light rays.

concave; → lens.

concave mirror
  آینه‌ی ِ کاو   
âyene-ye kâv (#)

Fr.: miroir concave   

A mirror whose surface is curved inward and converges the light rays.

concave; → mirror.

concavo-convex lens
  عدسی ِ کاو-کوژ   
adasi-ye kâv-kuž (#)

Fr.: lentille concavo-convexe   

A type of → convergent lens that is concave on one surface and convex on the opposite surface. Also called → meniscus lens. Meniscus lenses are used most often in conjunction with another lens to produce an optical system of a longer or shorter → focal length than the original lens.

concave; → convex; → lens.

conceive
  بگرتیدن   
begertidan

Fr.: concevoir   

To form a notion or idea of.

M.E., from O.Fr. conceivre, from L. concipere "to take fully, take in," → concept.

Verb from begert, → concept.

concentrate
  ۱) هم‌مرکزیدن، هم‌مرکز کردن؛ ۲) دبزیدن   
1) hammarkazidan, hammarkaz kardan; 2) dabzidan

Fr.: concentrer   

1) To bring or draw to a common center or point of union.
2) Of a solution, to make denser, stronger, or purer, esp. by the removal or reduction of liquid.

Verb with p.p. → concentrated.

<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB coa coe 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 cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl hyp ice ide ima ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc qua qua qua qua qui rad rad rad rad rad rad rai ran rar Ray rea Rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl 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 > >>