An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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molecular vibration
  شیوش ِ مولکولی  
šiveš-e molekuli
Fr.: vibration moléculaire  

The dynamical motion of chemically bound atoms which constantly change their position with each other. The vibration of molecules is treated within → quantum theory. Therefore, the energy of molecular vibration can only take → discrete values. To a first approximation, molecular vibrations can be approximated as
→ simple harmonic oscillator assigned to each mode.

See also: → molecular; → vibration.