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 : lightlike
lightlike
  نورسان   
nursân

Fr.: genre lumière   

Of, pertaining to, or describing an → event on the → light cone.

→ light; → -like.

lightlike interval
  اندروار ِ نورسان   
andarvâr-e nursân

Fr.: intervalle genre lumière   

The space-time interval between two events if it is zero, i.e. ds2 = 0.

→ lightlike; → interval.