Talk:Strain rate

The equation given is wrong. The true strain rate is equal to -v/l, l being the instantaneous length, not l_0, the original length. The equation given is equal to the engineering strain rate, with e in place of epsilon. I don't know how to edit those type of pages, so I won't do it myself, but can someone else change it?

Xwh1pla5hx (talk) 04:38, 16 January 2009 (UTC)

more information. focus on material mechanics, and fluid mechanics ,and etc  —Preceding unsigned comment added by 165.132.136.244 (talk) 10:23, 22 April 2010 (UTC)