In article <z9ednf_oe76e9cjrnz2dnuvz_vedn...@speakeasy.net>, r...@rpw3.org (Rob Warnock) wrote:
> RG <rnospa...@flownet.com> wrote: > +--------------- > | This reminds me of back when I was a kid and my dad was trying to teach > | me basic physics. He kept saying that the acceleration of gravity was > | 9.8 meters per second squared and I just couldn't wrap my brain around > | what it meant to square a second. > | > | Now that I think about it, I still can't. :-) > +--------------- > > Write it our longhand and it's easier to grok: > > 9.8 m/s^2 ==> 9.8 m/(s*s) ==> 9.8 m/(s*s) ==> > (9.8 meters per second) per second. > \ / > \__ speed added __/ per second Oh, that part I get. It's the abstract squared second that's still a deep mystery to me. A squared length is easily visualized. But according to relativity space and time are just two aspects of the same thing, so a squared second should make some kind of physical sense. rg -- http://mail.python.org/mailman/listinfo/python-list