# 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: 6 Search : equivalence
 Einstein equivalence principle   پروز ِ هموگ-ارزی ِ اینشتین   parvaz-e hamug-arzi-ye EinsteinFr.: principe d'équivalence d'Einstein   The → equivalence principle as stated by Einstein, on which is based the theory of → general relativity. It comprises the three following items: 1) The → weak equivalence principle is valid. 2) The outcome of any local non-gravitational experiment is independent of the velocity of the freely-falling → reference frame in which it is performed. Also known as → local Lorentz invariance. 3) The outcome of any local non-gravitational experiment is independent of where and when in the Universe it is performed. Also called → local position invariance.→ Einstein; → equivalence; → principle. equivalence   هموگ‌ارزی   hamug-arzi (#)Fr.: équivalence   The state or fact of being equivalent; equality in value, force, significance, etc. → covalence.From M.F. from M.L. æquivalentia, from L. æquivalent-, → equivalent.Hamug-arzi, noun of hamug-arz, → equivalent. equivalence principle   پروز ِ هموگ‌ارزی   parvaz-e hamug-arziFr.: principe d'équivalence   A fundamental concept of physics, put forward by A. Einstein, that states that gravitational and inertial forces are of a similar nature and indistinguishable. In other words, acceleration due to gravity is equivalent to acceleration due to other forces, and gravitational mass is the same as inertial mass. Same as the → principle of equivalence.→ equivalence; → principle. 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. principle of equivalence   پَروز ِ هموگ‌ارزی   parvaz-e hamug-arziFr.: principe d'équivalence   In → general relativity the principle which states that in the immediate proximity of an → accelerating system the acceleration is physically equivalent to → gravitational force. This principle also implies the equivalence of → gravitational mass and → inertial mass. Same as the → equivalence principle. See also → Einstein's elevator.→ principle; → equivalence. weak equivalence principle   پروز ِ هموگ‌ارزی ِ نزار   parvaz-e hamug-arzi-ye nezârFr.: principe d'équivalance faible   All structureless bodies fall along the same → path in a → gravitational field, independent of their composition. Also known as → universality of free fall. See also: → equivalence principle, → Einstein equivalence principle.→ weak; → equivalence; → principle.