"Strong typing vs. strong testing"
rNOSPAMon at flownet.com
Wed Oct 13 10:16:09 CEST 2010
In article <Z9ednf_oe76E9CjRnZ2dnUVZ_vednZ2d at speakeasy.net>,
rpw3 at rpw3.org (Rob Warnock) wrote:
> RG <rNOSPAMon at 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.
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