View Single Post
Posts: 1,873 | Thanked: 4,529 times | Joined on Mar 2010 @ North Potomac MD
#6162
Originally Posted by juiceme View Post
Well, not quite

"clocks slow down when in an accelerating reference frame"

Moving by itself does not count, since as there is no absolute reference point there is no way to tell who is "moving" and who is "staying still"...
However acceleration can be observed by the effects it it creates on inertia, which is analogus to gravitational gradient.
Well, in the first case I meant frame moving relative to "stationary" frame. After all, conclusion is based on theory of relativity which explains what you would measure in each frame relative to other.

And general theory of relativity uses the principle of equivalence, which states that gravitation and inertial forces are indistinguishable. So a person in accelerating rocket (say accelerating at 9.8 meters per seconds squared) can't distinguish between force due to acceleration or if it was gravity (on earth of course!) .

Any student of physics would know this! Ha ha. Just kidding. You're the best, along with Dave999 and Endsormeans. Did I leave out anyone else?