Bulk modulus

From Soft-Matter
Revision as of 04:38, 30 November 2009 by Datta (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

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>.