An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : doubly
doubly
  دوبار-، دو-، دوتایی   
dobâr-, dv-, dotâyi

Fr.: double, à ~   

1) To a double measure or degree.
2) In a double manner. → doubly convex, → doubly ionized, → doubly refracting crystal.

double; → -ly (; → twice).

doubly convex
  دو-کوژ   
do-kuž

Fr.: double-convexe   

Describing a → lens which is → convex on both sides.

doubly; → convex.

doubly ionized
  دوبار یونیده   
dobâr yonidé (#)

Fr.: deux fois ionisé   

An atom that has lost two of its external electrons, for example O++ ([O III]).

doubly; → ionized.

doubly refracting crystal
  بلور ِ شکست ِ دوتایی   
bolur-e šakst-e dotâyi

Fr.: cristal à double réfraction   

A → transparent → crystalline substance (such as calcite, quartz, and tourmaline) that is → anisotropic relative to the → speed of light. A ray incident normally on such crystals is broken up into two rays in traversing the crystal, → ordinary ray and → extraordinary ray.

doubly; → refracting; → crystal.