Sean Breheny wrote: > Would you consider the speed of light to be an absolute velocity? > Contrary to popular understanding, the Theory of Relativity is > somewhat a misnomer. Physics before Einstein considered all velocity > relative in a simple additive manner (like you suggest). Special > Relativity should more properly be called "irrelativity" or "partial > relativity" because velocities are only relative when they are small > compared to C. Near C, they are approximately absolute. Good point, I wasn't considering speeds near that of light. Speeds do become more absolute as you approach the speed of light. If I remember right, the original statement had something to do with Earth's absolute velocity, which doesn't make any sense unless you're a photon whizzing by. And in that case you could even argue the velocity is infinite since the photon's clock has stopped due to travelling at the speed of light. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist