Rob, To add another philosophical layer, you may want to restate your final comment as 'Reality will prevail'. It could be said that Physics attempts to model reality based on observations (a body of organized knowledge about the things and forces in the universe based on experimentation and observation - if anyone else on the list was forced to memorize that definition, give me a call and I'll quote a soliloquy from Hamlet that ought to rekindle some memories). Otherwise, we might have to say that 'reality' changed when Einstein came along (at least the 'reality' as defined by Newton). It probably wasn't the reality that changed only our interpretation of reality. Sorry, I am being facetious - but sometimes I can't resist. Nice examples. Regards, -Brett -----Original Message----- From: Rob Hinz [mailto:rob@xxxxxxxxxx] Sent: Wednesday, November 28, 2001 9:48 AM To: sainath@xxxxxxxxxxxxx Cc: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Si-list is one awesome avenue to learn and contribute to Signal Integrity Sainath A couple things you might consider, Maxwell's equations work very well for describing the average effects of many photons. When you start looking at the quantum level effects of small numbers of photons they don't work so well. They also predict that TEM waves in free space will propagate in a straight line but we know that the direction of propagation is effected by gravitational fields. The question Chris was responding to was a philosophical one, comparing how we model reality to reality itself. While we may be able to gain significant insight from a good mathematical model, it remains just that. Physics will prevail. Rob Hinz Senior Electromagnetics Specialist SiQual Corporation rob@xxxxxxxxxx phone (503)885-1231 fax (503)885-0550 http://www.siqual.com A ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu