An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 1358
complementary apertures
  دهانه‌های ِ اسپرنده   
dahânehâ-ye osporandé

Fr.: ouvertures complémentaires   

Same as → complementary screens.

complementary; → aperture.

complementary screens
  پرده‌های ِ اسپرنده   
pardehâ-ye osporandé

Fr.: écrans complémentaires   

Two apertures where opaque and transparent areas are inverted. If A is an aperture that has some opaque areas and some transparent ones, the complementary pattern A' is the pattern in which exactly the opposite areas are opaque and transparent. Thus, the complimentary screen of a single slit is a wire of the same size, and the complementary screen of a circular opening is a dot. A better term would be → complementary apertures.

complementary; → screen.

  ۱) اسپر؛ ۲) اسپریدن   
1) ospor; 2) osporidan

Fr.: 1) complet; 2) compléter   

1a) General: Having all necessary parts, elements, or steps.
1b) Math: Of a deductive theory or system, the property that every statement formulated in terms of the theory can be either proved or disproved.
2) To make whole or entire; to make perfect.

From O.Fr. complet "full," from L. completus, p.p. of complere "to fill up," from → com- + plere "to fill," PIE *pelu- "full," from *pel- "to be full;" cf. O.Pers. paru- "much, many," Av. parav-, pauru-, pouru-, par- "to fill," Mod.Pers. por "full," Skt. puru-, Gk. polus.

1) Ospor, from Mid.Pers. uspurr "complete, entire," from prefix us-, os-, → ex-, + por "full," O.Pers. paru- "much, many," Av. parav-, pauru-, pouru-, par- "to fill," PIE *pelu- "full," from *pel- "to be full;" cf. Skt. puru-, Gk. polus, O.E. full "completely, full," from P.Gmc. *fullaz, O.H.G. fol, Ger. voll, Goth. full.
2) From ospor + -idan infinitive suffix.

complete graph
  نگاره‌ی ِ اسپر   
negâre-ye ospor

Fr.: graphe complet   

In → graph theory, a simple graph with an → edge between every pair of → vertices.

complete; → graph.

complete set
  هنگرد ِ اسپر   
hangard-e ospor

Fr.: ensemble complet   

Quantum mechanics: A set of states such that any state can be represented as a superposition of them.

complete; → set.


Fr.: complétude   

1) The state of being complete and entire.
2) Logic: The condition of a → formal system if every → valid  → inference is → provable by means of the rules of the system.

From → complete + → -ness.

completeness magnitude
  برز ِ اسپری   
borz-e ospori

Fr.: magnitude de complétude   

In photometric studies of a → population of astronomical objects (usually stars or galaxies), the magnitude that represents the faintest members of the population.

completeness; → magnitude.

hamtâft (#)

Fr.: complexe   

1) General: (n. & adj.) A whole comprised of many elements. → complex wave.
2) (adj.) Complicated and hard to solve.
3) Math: Pertaining to or using → complex numbers.

From Fr. complexe, from L. complexus "surrounding, encompassing," p.p. of complecti "to embrace, encompass, include," from → com- "together" + plectere "to weave, twine."

Hamtâft, from ham- "together," → com- + tâft past stem of tâftan, tâbidan "to twist, to spin, to bend, to crook," p.p. tâftah "spun, silk or linen cloth," loaned into E. taffeta (from O.Fr. taffetas, from It. taffeta); similarly Gk. tapetion "little carpet" is probably from this Iranian origin (from which tapestry, tapis); Proto-Ir. *tap- "to spin," related to tan-, tanidan "to spin; to stretch," → tension.

complex conjugate
  همیوغ ِ همتافت   
hamyuq-e hamtâft (#)

Fr.: conjugé   

A → complex number in which the → real part of the number remains the same, but i is replaced by -i. For example, the complex conjugate of x + iy is x - iy. Same as → conjugate complex number.

complex; → conjugate.

complex dynamical variable
  ورتنده‌ی ِ توانیک ِ همتافت   
vartande-ye tavânik-e hamtâft

Fr.: variable dynamique complexe   

A → dynamical variable which has an → imaginary number part.

complex; → dynamical; → variable.

complex Fourier series
  سری ِ فوریه‌ی ِ همتافت   
seri-ye Fourier-ye hamtâft

Fr.: série de Fourier complexe   

The complex notation for the → Fourier series of a function f(x). Using → Euler's formulae, the function can be written in cimplex form as f(x) = Σ cn einx (summed from -∞ to ∞), where the → Fourier coefficients are cn = (1/2π)∫ f(x) e-inx dx (integral from -π to +π).

complex; → Fourier series.

complex fraction
  برخه‌ی ِ همتافت   
barxe-ye hamtâft

Fr.: fraction complexe   

A fraction in which the → numerator or → denominator, or both, contain fractions. For example (3/5)/(6/7). Also called → compound fraction.

complex; → fraction.

complex function
  کریای ِ همتافت   
karyâ-ye hamtâft

Fr.: fonction complexe   

A function whose → variables are → complex numbers.

complex; → function.

complex molecule
  مولکول ِ همتافت   
molekul-e hamtâft

Fr.: molécule complexe   

A molecule in the → interstellar medium comprising at least six atoms (e.g. Herbst & van Dishoeck, 2009, ARA&A).

complex; → molecule.

complex number
  عدد ِ همتافت   
adad-e hamtâft (#)

Fr.: nombre complexe   

Any number of the form u = a + bi, where a and b are → real numbers and i imaginary, i.e. i2 = -1.

complex; → number.

complex organic molecule (COM)
  مولکول ِ ارگانیک ِ همتافت   
molekul-e orgânik-e hamtâft

Fr.: molécule organique complexe   

A → complex molecule containing C, H, O, and N atoms and involved in life developing processes. See also → organic molecule.

complex; → organic; → molecule.

complex population
  پرینش ِ همتافت   
porineš-e hamtâft

Fr.: population complexe   

Same as → composite population.

complex; → population.

complex wave
  موج ِ همتافت   
mowj-e hamtâft (#)

Fr.: onde complexe   

A wave that is composed of several frequencies.

complex; → wave.

hamneh (#)

Fr.: composante   

A constituent part; an individual part of an organized whole.
One of two or more vectors having a sum equal to a given vector.

L. componentem, pr.p. of componere "to put together," → compose.

Hamneh from ham- "together," → com- + neh present tense stem of nehâdan "to put, place," → compose.

hamnehâdan (#)

Fr.: composer   

To create or form by putting together things, parts, or elements.

From O.Fr. composer "put together, arrange," from → com- "together" + poser "to place," from L. ponere "to put, place."

Hamnehâdan from ham-, → com-, + nehâdan "to put, place," Mid.Pers. nihâtan, Av. ni- "down; into," → ni- (PIE), + dâ- "to put; to establish; to give," dadâiti "he gives," cf. Skt. dadâti "he gives," Gk. didomi "I give," L. do "I give;" PIE base *do- "to give."

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