An Etymological Dictionary of Astronomy and AstrophysicsEnglish-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 142 Search : erg
 mass-energy equivalence   هموگ‌ارزی ِ جرم-کاروژ   hamug-arzi-ye jerm-kâružFr.: équivalence masse-énergie   The principle of interconversion of mass and energy, described by the → mass-energy relation.→ mass; → energy; → equivalence. mass-energy relation   باز‌آنش ِ جرم-کاروژ   bâzâneš-e jerm-kâružFr.: relation masse-énergie   The famous equation proposed by Einstein as a consequence of his special theory of relativity describing the equivalence of mass and energy: E = mc2, where E is energy, m is the equivalent amount of mass, and c is the velocity of light.→ mass; → energy; → relation. mechanical energy   کاروژ ِ مکانیکی   kâruž-e mekânikiFr.: énergie mécanique   The energy that is possessed by an object due to its motion or due to its position. It is equal to the sum of the → kinetic energy and → potential energy.→ mechanical; → energy. merge   ۱) تشکیدن؛ ۲) تشکاندن   1) taškidan; 2) taškândanFr.: fusionner   1) (v.intr.) To become combined, united, swallowed up, or absorbed; lose identity by uniting or blending. 2) (v.tr.) To cause to combine or coalesce. To combine, blend, or unite gradually so as to blur the individuality or individual identity of. Related terms: → fuse, → coalesce. See also → merger, → mergeburst, → merger process, → merger tree, → merging, → merging galaxy, → minor merger, → mixed merger, → wet merger. From L. mergere "to dip, immerse," probably rhotacized from *mezgo, and cognate with Skt. majj- "to dive, to sink," majjati "dives under;" Lith. mazgoju "to wash."Taškidan, taškândan, from Gilaki tašk "tie, knot;" Tabari tešk "knot" + -idan infinitive suffix. mergeburst   تشک-بلک   tašk-belkFr.:   A hypothetical → transient event undergone by a → star due to its violent → merging with another star in a → close binary star. The release of → orbital energy causes the → envelope of the star to heat up and → inflate, causing the star to brighten considerably. Mergebursts are predicted to rival or exceed the brightest classical → novae in luminosity, but to be much cooler and redder than classical novae, and to become slowly hotter and bluer as they age.→ merge; → burst. merger   ۱) تشکه؛ ۲) تشک   1) tašké; 2) taškFr.: fusion, coalescence   1) Any combination of two or more bodies into a single body. In particular, the formation of a galaxy from the collision of two or more separate galaxies. 2) An act or instance of merging.From → merge + -er (as in waiver).Tašké; tašk, nouns from taškidan, → merge. merger process   فراروند ِ تشک   farâravand-e taškFr.: processus de fusion   The process of collision between galaxies which leads to a single galaxy.→ merger; → process. merger tree   درخت ِ تشک   deraxt-e taškFr.: arbre de coalescence   A method used in → numerical simulations for studying the growth and development of galaxies and → dark matter halos. Within the currently accepted ΛCDM cosmology, dark matter halos merge from small → clumps to ever larger structures. This merging history can be traced in simulations and stored in the form of merger trees. Merger trees are necessary because a galaxy may have more than one → progenitor at an early time.→ merger; → tree. merging   تشک   taškFr.: 1) fusion   1) (n.) The act of joining together as one, such as galaxy → merger. 2) (adj.) That merges.Noun from → merge. merging galaxies   کهکشان‌های ِ تشکنده   kahkešânhâ-ye taškandéFr.: galaxies en coalescence   Two or more galaxies that collide and merge into one galaxy.→ merging; → galaxy. minor merger   تشک ِ کهین   tašk-e kehinFr.: fusion mineure   The → merging in which one of the galaxies is significantly larger than the other (mass ratios above 10). The larger galaxy will often "swallow" the smaller satellite galaxy. The swallowed galaxy can trigger disk and nuclear star formation or activate a central core with shells that surround the predator.→ minor; → merger. mixed merger   تشک ِ آمیخته   tašk-e âmixtéFr.: fusion mixte   A merger that takes place when a → gas-poor galaxy collides with a → gas-rich galaxy.Past-participle of → mix; → merger. nuclear energy   کاروژ ِ هسته‌ای   kâruž-e haste-yiFr.: énergie nucléaire   Energy released during a nuclear reaction as the result of the conversion of mass into energy. → mass-energy equivalence.→ nuclear; → energy. orbital energy   کاروژِ مداری   kâruž-e madâriFr.: énergie orbitale   The → sum of the → potential energy and the → kinetic energy of an object in → orbit.→ orbital; → energy. pairing energy   کاروژ ِ جفتش   kâruž-e joftešFr.: énergie de parité   In nuclear physics, the extra binding energy associated with pairs of nucleons of the same kind. This quantity expresses the fact that nuclei with odd numbers of neutrons and protons have less energy and are less stable than those with even numbers of neutrons and protons.Pairing, verbal noun of → pair; → energy. periodically variable supergiant (PVSG)   ابرغول ِ ورتنده‌ی ِ دوره‌ای   abarqul-e vartande-ye dowreyiFr.: supergÃ©ante variable pÃ©riodiquement   A variable → supergiant star with typical periods of the order of 10 to 100 days and amplitudes less than a few tenths of a magnitude. PVSGs are thought to be pulsating → g modes, caused by a density inversion, arising from an → opacity bump, most likely from Fe, H, and/or He.→ periodical; → -ly; → variable; → supergiant. Planck energy   کاروژ ِ پلانک   kâruž-e PlanckFr.: énergie de Planck   The unit of energy in the system of Planck units. EP = √ (ħ c5/G) ≅ 1.22 x 1019 GeV. It can also be defined as EP = ħ / tP, where tP is the Planck time. This is an extraordinarily large amount of energy on the subatomic scale and particle accelerators have yet to produce a particle with this magnitude of energy. Understanding the properties of a subatomic particle that contains the Planck Energy is helpful in developing a Unified Field Theory which encompasses the realms of Quantum Theory and Relativity, although this too has evaded complete scientific understanding.→ Planck; → energy. potential energy   کاروژ ِ توند   kâruž-e tavandFr.: énergie potentielle   Of a system, the work done in changing the system from some standard configuration to its present state. Thus, if a body of mass m is raised vertically through a height h, the work done, mgh, is the increase in potential energy.→ potential; → energy. potential energy curve   خم ِ کاروژ ِ توند   xam-e kâruž-e tavandFr.: courbe de l'energie potentielle   A plot that displays the → potential energy of a moving body as a function of its position. It is explained by the → conservation of energy and the conversion of potential energy into → kinetic energy and vice versa.→ potential; → energy; → curve. radiant energy   کاروژ ِ تابشی   kâruž-e tâbešiFr.: énergie radiative   The energy that is transmitted in the form of → radiation, in particular as → electromagnetic radiation.→ radiant; → energy.