Re: Newton vs. Einstein (No Who)

["L. Bird" <pkeets@hotmail.com>]

>Einstein's relativity theories didn't "replace" Newton's theories; they 
>sort of fine tuned them.  Newton's equations still work perfectly well 
>today dealing with motion on a large scale.  NASA uses these basic 
>Newtonian equations everytime they plan a space flight.
>
>Relativity helps explain some of the "small-scale" fluctuations that occur 
>with-in Newton's theories.  However, Einstein's relativity theory *is* the 
>grander of the two.  It's more exact & has been proven through experiment 
>many, many times.  It "encompasses" Newton's theories.

Well, obviously Newton wasn't wrong--he just didn't think big enough.  But 
doesn't NASA have to use Einstein's theories once they get away from 
standard gravity?  Newton was concerned with mechanics within the  Earth's 
gravity field, and his theories form the basis of traditional engineering.  
Once you're outside of that, you need a bigger theory.

keets
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com