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oscillation

  
   
The periodic (or almost periodic) variation of a physical quantity. It may be in the form of, for example, a vibration (the quantity is displacement) or an a.c. circuit (the quantity is electric current). If the variation is perfectly periodic, it is known as harmonic.  

 

 

  
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Other Terms : pelvic girdle (pelvis) | Purkinje fibres | Saturn

 

 
 
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