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: 968
axisymmetry
  همامونی ِ آسه‌ای، آسه-همامونی   
hamâmuni-ye âse-yi, âse-hamâmuni

Fr.: axisymétrie   

Same as → axial symmetry.

azimuth
  سوگان، سمت   
sugân, samt

Fr.: azimut   

The → angular distance from the → North point eastward to the intersection of the → horizon with the → vertical circle passing through the object. Azimuth is 0° for an object due north, 90° due east, 180° due south, and 270° due west. → Altitude and azimuth constitute the → horizon coordinate system.

From O.Fr. azimut, from Ar. as-sumut (السمت) "the directions, ways," pl. of as-samt "the direction, way."

Sugân, from su "direction" + -gân direction suffix.

azimuth circle
  پرهون ِ سوگان، دایره‌ی ِ ~   
parhun-e sugân, dâyere-ye ~

Fr.: cercle d'azimut   

One of great circles of the → celestial sphere which passes through the → zenith, → nadir, and the star, cutting the horizon at right angles. Same as → vertical circle.

azimuth; → circle.

azimuthal
  سوگانی   
sugâni

Fr.: azimutal   

Or, or pertaining to an → azimuth.

azimuth + → -al.

azimuthal angle
  زاویه‌ی ِ سوگانی   
zâviye-ye sugâni

Fr.: angle azimutal   

In → spherical coordinates, an angle measured from the x-axis in the xy-plane.

Azimuthal, adj. from azimuth; → angle.

azimuthal magnetic field
  میدان ِ مغناتیسی ِ سوگانی   
meydân-e meqnâtisi-ye sugâni

Fr.: champ magnétiquue azimutal   

In the → solar dynamo model, a magnetic field that points from east to west or vice-versa.

azimuthal; → magnetic; → field.

azimuthal projection
  فراشانش ِ سوگانی   
farâšâneš-e sugâni

Fr.: projection azimutale   

A map projection on which the → azimuths of all points are shown correctly with respect to the center. A plane tangent to one of the Earth's poles is the basis for polar azimuthal projection.

azimuthal; → projection.

azimuthal quantum number
  عدد ِ کو‌آنتومی ِ سوگانی   
adad-e kuântomi-ye sugâni

Fr.: nombre quantique azimutal   

In quantum mechanics, a quantum number that distinguishes the different shapes of the orbitals.

Azimuthal, adj. from → azimuth; → quantum number.

<< < -ab ab- abo abs abs acc acc ack act acu add adi adv aff agg Ald Alf ali Alm alp alt amb an- ana ang ang ann ano ant ant ape apo app app arc Arg ari art ass ast ast ast Atl ato ato aub aut Avo axi > >>