Talk:Physics with Calculus/Mechanics/The SI Unit System

Why do the equations change sizes? Can someone put the derived unit equations down below the definitions?

I thought there were only three fundamental units: length, mass, and time; and the others could be defined from them. (And that is what my lower division physics textbook says too.) Does anyone have a reference that says something like "ampere" is a fundamental unit? novakyu 03:13, 15 Mar 2005 (UTC)
 * Egh. Fixed it myself by clarifying what is meant by "fundamental". The 7 units are "fundamental" in the sense that they are the beginning units for SI system. But physically speaking, only the first three are---you can see in the definitions that the four other units are actually defined in terms of the first three or their derived units. novakyu (talk) 23:11, 20 December 2007 (UTC)