Compressibility under isothermal (constant temperature ) compression/decompression thermodynamic process:
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c_T = \frac{1}{\rho} \left( \frac{\partial \rho}{\partial p} \right)_T = - \frac{1}{V_m} \left( \frac{\partial V_m}{\partial p} \right)_T |
Isothermal Compressibility is material property and inverse to Isothermal bulk modulus :
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\beta_T = \frac{1}{K_T} |
See also
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Physics / Mechanics / Continuum mechanics / Continuum body / Compressibility
[ Isothermal bulk modulus ]