Buckingham π theorem

The Buckingham π theorem is a key theorem in dimensional analysis.

This theorem describes how every physically meaningful equation involving n variables can be equivalently rewritten as an equation of n-m dimensionless parameters, where m is the number of fundamental units used. Furthermore, and most importantly, it provides a method for computing these dimensionless parameters from the given variables, even if the form of the equation is still unknown.

External links:

• http://www.math.ntnu.no/~hanche/notes/buckingham/