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

Having an interest in something; having the attention engaged; being affected or involved.

P.p. of → interest.

Inspiring interest, holding the attention.

Adj. from → interest.

1) General: A surface regarded as the common boundary of two bodies, or two parts of a system, whether material or non-material.
2) Astro.: The intersection zone between a hot → H II region and its → associated molecular cloud.
3) Chemistry: The area where two immiscible phases of a dispersion come into contact.
4) Computers: A mechanical equipment or logical program that communicates information from one system of computing devices or programs to another.

→ inter- + → face.

Physics: To cause → interference.

Interfere, from M.Fr. entreferer "to strike each other," from entre, → inter-, + ferir "to strike," from L. ferire "to knock, strike."

Andarzadan, from andar, → inter-, + zadan "to strike, beat," from Mid.Pers. zatan, žatan; O.Pers./Av. jan-, gan- "to strike, hit, smite, kill" (jantar- "smiter"); cf. Skt. han- "to strike, beat" (hantar- "smiter, killer"); Gk. theinein "to strike;" L. fendere "to strike, push;" Gmc. *gundjo "war, battle;" PIE *g^when- "to strike, kill."

The phenomenon occurring when two or more waves of the same → frequency having a constant → phase difference traverse simultaneously in the same region of a medium and cross each other. In the region of superposition, the the resulting wave intensity is different from the sum of intensities due to individual waves at that point. This phenomenon proved the validity of the wave theory of light. See also → constructive interference, → destructive interference, → interference fringe, → Young's experiment, → wave theory of light.

Interference, from → interfere + -ence a noun suffix equivalent to -ance, corresponding to the suffix -ent in adjectives.

Andarzaneš, verbal noun of andarzadan, → interfere.

A filter that uses the phenomenon of optical interferences between plane-parallel semi-transparent reflectors to transmit light selectively over a narrow wavelength band.

→ interference; → filter.

One of the alternating bright or dark bands produced by optical interference.

→ interference; → fringe.

→ order of interference.

→ interference; → order.

A wave pattern that results when two or more waves interfere with each other, generally showing → interference fringes. In acoustics, the interference pattern appear as the effect of → beats.

→ interference; → pattern.

1) Physics: A device that divides a beam of light into a number of beams and re-unites them to produce → interference. → Fabry-Perot interferometer; → Michelson interferometer.
2) Astro.: An arrangement of two or more separate telescopes placed at some distance from one another, each one receiving electromagnetic radiation (optical, infrared, or radio) from a celestial object and brought together to form an interference pattern.

Interferometer, from interfer, → interfer, + -o- a connective/euphonic infix + → -meter.

Andarzanešsanj, from andarzaneš→ interference + -sanj, → -meter.

Of or relating to → interferometry.

→ interferometer; → -ic.

A system of several telescopes coupled together in a particular configuration to carry out → interferometry.

→ interferometric; → array.

An observational technique based on principles of → interferometry.

→ interferometric; → technique.

1) The technique and study of the → interference phenomenon produced by → coherent electromagnetic waves.
2) Astro.: An observational technique that uses the interference phenomenon to substantially increase the → resolving power of telescopes.

Interferometry, from interfer, → interfer, + -o- a connective/euphonic infix + → -metry.

Of, existing, or occurring in the space between galaxies. → intergalactic absorption, → intergalactic cloud, → intergalactic matter , → intergalactic medium , → warm-hot intergalactic medium.

→ inter-; → galactic.

→ Absorption features in the spectra of bright sources like → quasars attributed to a tenuous matter filling the medium between galaxies.

→ intergalactic; → absorption.

→ Intergalactic matter in the form of clouds.

→ intergalactic; → cloud.

Very low density material found indirectly in the space between galaxies. → intergalactic absorption.

→ intergalactic; → matter.

The matter or environment between the galaxies of a → cluster.

→ intergalactic; → medium.

1a) An intervening time; interval; meantime.
1b) A temporary or provisional arrangement.
2) For, during, belonging to, or connected with an intervening period of time; temporary; provisional (Dictionary.com).

L. interim (adv.) "in the meantime, meanwhile," originally "in the midst of that," from → inter- "between" + im, an old accusative of "is, he, this, that."

Andarim, from andar-, → inter-, + im variant em "this;" Mid.Pers. im "this;" from Old.Pers./Av. ima "this;" Skt. ima; cf. Lori (Laki) im "this side." The Mid.Pers. im occurs in Mod.Pers. as em- in emruz "today," emšab "tonight," and emsâl "this year."