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: 5 Search : dispersive
dispersive
  پاشنده، پاششی   
pâšandé, pâšeši

Fr.: dispersif   

Tending or serving to disperse.

From → disperse + → -ive.

dispersive index
  دیشن ِ پاششی   
dišan-e pâšeši

Fr.: indice de dispersion   

The reciprocal of the → dispersive power.

dispersive; → index.

dispersive medium
  مدیم ِ پاشنده   
madim-e pâšandé

Fr.: milieu dispersif   

A medium in which the → phase velocity is a function of → wave number (→ frequency).

dispersive; → medium.

dispersive power
  توان ِ پاشش   
tâvân-e pâšeš

Fr.: pouvoir dispersif   

A measure of the ability of a medium to separate different colors of light. It is defined by: (n2 - n1)/(n - 1), where  n1 and n2 are refractive indices at two specified widely differing wavelengths, and n is the → index of refraction for the average of these wavelengths.

dispersive; → power.

non-dispersive medium
  مدیم ِ ناپاشنده   
madim-e nâpâšandé

Fr.: milieu non dispersif   

A medium in which the → phase velocity is independent of frequency.

non-; → dispersive; → medium.