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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Notice: Undefined offset: 3 in /var/www/dictionary/searchDisplayPaging.php on line 18
<< < alp ind tra > >>

Number of Results: 48 Search : mission
induced emission
  گسیل ِ درهاخته، ~ ِ درهازیده   
gosil-e darhâxté, ~ darhâzidé

Fr.: émission induite   

The emission of radiation from an atom when it is bombarded by photons. The induced radiation has the same wavelength and direction as the bombarding radiation. Same as → stimulated emission.

induced; → emission.

infrared emission
  گسیل ِ فروسرخ   
gosil-e forusorx

Fr.: émission infrarouge   

The portion of → electromagnetic radiation from → astrophysical objects in → infrared frequencies.

infrared; → emission.

InSight Mission
  گسیلان ِ اینسایت   
gosilân-e InSight

Fr.: InSight: Exploration interne par les sondages sismiques, la géodésie et les flux thermiques   

A NASA lander designed to study the interior of the planet Mars. It will be a stationary mission, in contrast to NASA's famous Opportunity, Spirit and Curiosity rovers. Staying in place is necessary for its major science goals, which include learning more about the Martian composition, and how tectonically active the red planet is. InSight launched toward Mars on May 5, 2018, landed on Nov. 26, 2018, at the Martian Elysium Planitia, an equatorial zone just south of an ancient volcanic area. InSight will send back data about Mars' interior for about 1 Mars year, or 728 Earth-days. The lander uses sophisticated instruments, to delve deep beneath the surface and seek the fingerprints of the processes that formed the terrestrial planets. It does so by carrying out → seismology, heat flow measurements, and precision tracking.

InSight, short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport; → mission.

K2 mission
  گسیلان ِ K2   
gosilân-e K2

Fr.: mission K2   

A follow-up mission of the → Kepler satellite funded by → NASA. K2 provides an opportunity to continue Kepler's observations in the field of → exoplanets and expand its role into new astrophysical observations by assigning to Kepler new mission.

K, short for → Kepler spacecraft; 2, for second → mission.

low-ionization nuclear emission-line region
  ناحیه‌ی ِ هسته‌ای با خط ِ گسیلی ِ کم‌یونش   
nâhiye-ye hasteyi bâ xatt-e gosili-ye kamyoneš (#)

Fr.: Noyau de galaxie à raies d'émission de faible ionisation   

Same as → LINER.

low; → ionization; → nuclear; → emission; → line; → region.

maser emission
  گسیل ِ میزری   
gosil-e meyzeri (#)

Fr.: émission maser   

An emission arising from the → maser process.

maser; → emission.

mission
  گسیلان   
gosilân

Fr.: mission   

An operation designed to carry out the goals of a specific program, such as a a space flight or voyage.

Mission, from L. missionem (nominative missio) "act of sending," from mittere "to send," of unknown origin.

Gosilân, from gosil, variant gosi "sending away, dismission;" Mid.Pers. wisé "to despatch" (Parthian Mid.Pers. wsys- "to despatch;" Buddhist Mid.Pers. wsydy "to despatch;" Sogdian 'ns'yd- "to exhort"), from Proto-Iranian *vi-sid- "to despatch, send off," from prefix vi- "apart, away, out," + *sid- "to call" + -ân nuance suffix.

molecular emission
  گسیل ِ مولکولی   
gosil-e molekuli

Fr.: émission moléculaire   

An → electromagnetic radiation emitted by → interstellar molecules through → transitions between → energy states of → molecules.

molecular; → emission.

neutron emission
  گسیل ِ نوترون   
gosil-e notron (#)

Fr.: émission de neutrons   

A type of radioactive decay of atoms containing excess neutrons, in which a neutron is ejected from the nucleus.

neutron; → emission.

non-thermal emission
  گسیل ِ ناگرمایی   
gosil- nâgarmâyi (#)

Fr.: émission non thermique   

non-thermal radiation.

non-thermal; → emission.

permission
  پرزامش   
parzâmeš

Fr.: permission   

The act of permitting. Authorization granted to do something.

verbal noun of → permit; → -tion.

radio continuum emission
  گسیل ِ پیوستار ِ رادیویی   
gosil-e peyvastâr-e râdio-yi

Fr.: émission de continuum radio   

A → continuum emission with frequencies in the radio range of the electromagnetic spectrum.

radio; → continuum; → emission.

radio emission
  گسیل ِ رادیویی   
gosil-e râdio-yi

Fr.: émission radio   

Electromagnetic radiation carried by → radio waves.

radio; → emission.

secondary emission
  گسیل ِ دومان   
gosil-e dovomân

Fr.: émission secondaire   

The emission of → secondary electrons from the surface of a material when an incident particle (often, charged particle such as electron or ion) impacts the material with sufficient energy.

secondary; → emission.

space mission
  گسیلان ِ فضایی   
gosilân-e fazâyi

Fr.: mission spatiale   

A manned or unmanned space flight outside the Earth's atmosphere.

space; mission, from L. missionem (nominative missio) "act of sending," from mittere "to send," of unknown origin.

Gosilân, from gosil, variant gosi "sending away, dismission;" Mid.Pers. wisé "to despatch" (Parthian Mid.Pers. wsys- "to despatch;" Buddhist Mid.Pers. wsydy "to despatch;" Sogdian 'ns'yd- "to exhort"), from Proto-Iranian *vi-sid- "to despatch, send off," from prefix vi- "apart, away, out," + *sid- "to call" + -ân nuance suffix; fazâyi adj. of fazâ, → space.

spontaneous emission
  گسیل ِ سرخود   
gosil-e sarxod

Fr.: émission spontanée   

The emission of electromagnetic radiation from an atom or molecule that does not depend on the presence of external fields.

spontaneous; → emission.

stimulated emission
  گسیل ِ گوازیده   
gosil-e gavâzidé

Fr.: émission stimulée   

The process by which an electron, which is already in an excited state (an upper energy level, in contrast to its lowest possible level or "ground state"), can "stimulate" a transition to a lower level, producing a second photon of the same energy. The quantum energy of the incoming photon should be equal to the energy difference between its present level and the lower level. This process forms the basis of both the → laser and → maser. Same as → induced emission.

Stimulated, p.p. of → stimulate; → emission.

submission
  درسپرد   
dar-sepord

Fr.: soumission   

An act or instance of submitting. The condition of having submitted. → submit

Verbal noun of → submit.

thermal emission
  گسیل ِ گرمایی   
gosil-e garmâyi (#)

Fr.: émission thermique   

thermal radiation.

thermal; → emission.

thermionic emission
  گسیل ِ گرمایونی   
gosil-e garmâyoni

Fr.: émission thermionique   

Electrons gaining enough thermal energy to escape spontaneously from the cathode or dynodes and mimic photoelectrons.

thermion; → emission.


Notice: Undefined offset: 3 in /var/www/dictionary/searchDisplayPaging.php on line 18
<< < alp ind tra > >>