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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : expand
ever-expanding Universe
  گیتی ِ هماره‌سپانا   
giti-ye hamâré sopânâ

Fr.: Univers en expansion continue   

Same as → accelerating Universe.

→ expand; → Universe.

expand
  ۱) سپاندن؛ ۲) سپانده شدن   
1) sopândan; 2) sopânde šodan

Fr.: 1) dilater, agrandir, développer; 2) se dilater, s'agrandir, se développer   

1a) To change (something) from a smaller form and/or size to a larger one.
1b) To increase the extent, number, volume or scope of (something).
1c) To express (something) at length and/or in detail.
1d) Math.: To write (a mathematical expression) as a sum of terms in an extended form.
2) to increase or grow in extent, bulk, scope; to spread out; unfold; develop.
See also → spread, → extend, → dilate.

M.E. expanden, from O.Fr. espandre "to spread, spread out," from L. expandere "to spread out, unfold, expand," from → ex- "out" + pandere "to spread, stretch," from nasalized form of PIE root *pete- "to spread," a Pers. offshoot of which is pahn "wide, broad," as below. from

Sopândan, "to stretch, to extend, open out" from so- "out," → ex-, + pân, from pan, variant of pahn "wide, large, broad, ample, extensive," from Mid.Pers. pah(a)n; Av. paθana- "broad, wide, spacious;" PIE root *pete- "to spread;" cf. L. patere "to be open," Gk. petannynai "to spread out," petalon "a leaf."
Alternatively, sopândan "to open up, to open out," from so- "out," → ex-, + pân "open," cf. Yaghnobi pen, peyn "to open, unroll," Sogd. pyn- "to open," ultimately from Proto-Ir. *apa- "off, away, from" + *hHai- "to chain, bind," from which Pers. gošâdan "to open, release" (Cheung 2007).

Expanded Very Large Array (EVLA)
     
EVLA

Fr.: EVLA   

A → radio interferometer array consisting of 27 25-meter diameter antennas located on the Plains of San Agustin in West-Central New Mexico. EVLA will operate at any frequency between 1.0 and 50 GHz and will have a continuum sensitivity improvement over the → VLA by factors of 5 to 20.The EVLA project is expected to be completed in 2012. See also the EVLA homepage.

→ expand; → very; → large; → array.

expanding Universe
  گیتی ِ سپانا، ~ سپاننده   
giti-ye sopânâ, ~ sopânande

Fr.: Univers en expansion   

The deduction based on the observational fact that the greater the → distance to a → galaxy, the greater the → redshift in its → spectral lines (→ Doppler effect). The observations strongly indicate that galaxies appear to be moving away from us with speeds proportional to their distance. This is in agreement with the overall → expansion of the → Universe.

→ expand; → -ing; → Universe.