Compressibility | Wikipedia audio article
Channel: wikipedia tts
Date: 25/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Compressibility


00:00:54 1 Definition
00:02:17 1.1 Relation to speed of sound
00:03:15 1.2 Relation to bulk modulus
00:03:39 2 Thermodynamics
00:08:14 3 Earth science
00:09:16 4 Fluid dynamics
00:09:37 4.1 Aerodynamics
00:10:42 5 Negative compressibility
00:11:11 6 See also



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SUMMARY
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In thermodynamics and fluid mechanics, compressibility (also known as the coefficient of compressibility or isothermal compressibility) is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change. In its simple form, the compressibility 
  
    
      
        β
      
    
    {\displaystyle \beta }
   may be expressed as

  
    
      
        β
        =
        −
        
          
            1
            V
          
        
        
          
            
              ∂
              V
            
            
              ∂
              p
            
          
        
      
    
    {\displaystyle \beta =-{\frac {1}{V}}{\frac {\partial V}{\partial p}}}
  ,where V is volume and p is pressure. The choice to define compressibility as the opposite of the fraction makes compressibility positive in the (usual) case that an increase in pressure induces a reduction in volume.