An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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propagation
  توچش  
tuceš
Fr.: propagation  

Physics: The act or process of propagating, especially the process by which a disturbance, such as the motion of electromagnetic or sound waves, is transmitted through a medium such as air or water.
Linguistically related notions: → diffusion (پخش);
→ dispersion(پاشش); → scattering (پراکنش); → diffraction (پراش).

See also: Verbal noun of → propagate.