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: 2 Search : efficacy
efficacy
  اسکرمندی   
oskarmandi

Fr.: efficacité   

Power or capacity to produce a desired effect; → effectiveness.

From L. efficacia "efficacy, efficiency," from efficax "powerful, effectual, efficient," from stem of efficere "accomplish," → effect.

Oskarmandi, → effectiveness.

luminous efficacy
  اسکرمندی ِ تابشی   
oskarmandi-ye tâbeši

Fr.: efficacité lumineuse   

A measure indicating the ability of a light source to emit visible light using a given amount of → power. It is a ratio of the visible energy emitted to the power that goes into the bulb from the electrical line.

luminous; → efficacy.