Thread: Space time ??
View Single Post
  #32  
Old August 18th 05 posted to sci.physics
PD
external usenet poster
 
Posts: 22,012
Default Space time ??


TomGee wrote:
Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.


Unroll a paper tape as you walk and mark it every 10 seconds as it
unwinds. Congratulations. You just make a world line. No math construct
there, Tom.

I'm in a room that is 10' by 12' by 14'. Is the central 2'x3'x5' block
of space a math construct or is it really there?


AE invented a universe having the same exact dimensions which our own
universe contains, i.e., length, width, depth, and time. He did it to
show that he was not talking about our universe but an imaginary one.
His lemmings, however, insist he was talking about a real place and
they talk about it as if it exists. Go figure.


Ads
 

Loans - Refinance - Internet Advertising - Health 2007 - Credit Cards