Joined: June 2006
[quote=olegt,April 23 2011,07:55][/quote]
|(snip) *To be sure, the space is a bit weird: the square of the distance in it is not the sum of squares of all coordinates. You add the squares of the spatial coordinates and subtract the square of the time coordinate. |
Yeah, I always thought that was kinda weird.
|**The other half is the principle of equivalence: gravity can be simulated by accelerated motion. Remember feeling heavier in an elevator starting up? It's not an illusion, that's how gravity works.|
Meaning gravity is what, acceleration through space time? Inertia against change in 4-d co-ordinates? Your feet moving more slowly through time than your head? Weird stuff, indeed.
"But it's disturbing to think someone actually thinks creationism -- having put it's hand on the hot stove every day for the last 400 years -- will get a different result tomorrow." -- midwifetoad
"I am in a rush to catch up with science work." -- Gary Gaulin