# Difference between revisions of "Bulk modulus"

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− | The bulk (or compressional) modulus K of a material is a measure of its resistance to uniform compression. Similar to | + | The bulk (or compressional) modulus K of a material is a measure of its resistance to uniform compression. Similar to an inverse compressibility, it can be derived from the osmotic pressure <math>\Pi</math> of a sample as a function of the volume fraction <math>\phi</math> via <math>K=\phi\cdot d\Pi/d\phi</math>. |

## Latest revision as of 04:38, 30 November 2009

The bulk (or compressional) modulus K of a material is a measure of its resistance to uniform compression. Similar to an inverse compressibility, it can be derived from the osmotic pressure <math>\Pi</math> of a sample as a function of the volume fraction <math>\phi</math> via <math>K=\phi\cdot d\Pi/d\phi</math>.