Recent content by AnotherDave

For my purposes, "Grandpa" has been satisfied and this question has been thoroughly answered. I sincerely thank everyone who has responded. To the "admins" I may recommend that the best of this thread be archived and put up on a FAQ page, as I'm sure this isn't the last time someone will ask...

I like the spirit of WonderWatcher's response. "Why C2" is really not a meaningful question as Russ Walters correctly points out. But I don't want to be insulting by telling an old man his question isn't meaningful. Using the 4×∏×R2 which is something most people remember, I can respectfully...

Ok, that makes sense. But I still have to find a way of explaining this to someone who majored in Art Philosophy *facepalm*

I'm quite sure this was a typo. But you said it twice, so I think you mean to say something else. Everything does not travel through space and time at C. Everything travels at a percentage of C...but for oversimplified purposes, only C travels at C. Grandpa isn't going to understand...

Ok, let me rephrase the context of the original question. Grandpa has been a mailman all of his life. But he likes all that "sciencey stuff" on the discovery channel. He knows his smart Grandson is a physics student and he's always wondered about that whole E=MC2 thing. So Grandpa comes...

Again, you have to find your *why*. When I go back to school, I'll be in class with a bunch of kids, the majority of whom are *required* to be there, but who would rather be doing something else. At 43 years old, do you really think I care what other people think, or how I compare to my 20...

I just turned 43 on Dec 2, 2008. For the past several years, I've been fixated on physics, driving my wife insane in the process :smile: When I'm not working on computers, I'm reading some physics book, magazine...the discovery science channel is on all the time, and my professors have been...