Originally posted by chr0naut
I believe what Einstein proposed in his "Elevator" thought experiment was that the force created by acceleration was indistinguishable from the force created by gravity to an observer with no other frame of reference but themselves (ie: enclosed in an elevator).
This does not equate to acceleration and gravity being the same thing.
Originally posted by ubeenhad
ANYONE I know who has taken any undergraduate level class that covers relativity would trace the path of Einstein. And he DISCOVERED relativity with a similar thought experiment. So everyone gets told acceleration is the same as gravity. Its just something we say, all the time.
"Acceleration doesn't cause gravity"
For all intensive purposes, im sorry. It does.
edit on 3-11-2012 by ubeenhad because: (no reason given)edit on 3-11-2012 by ubeenhad because: (no reason given)edit on 3-11-2012 by ubeenhad because: (no reason given)
Originally posted by yampa
Ole Rømer did the first relativity equations for light when he discovered the finite speed of light in 1676. Einstein didn't really discover relativity, he came up with some models, arbitrarily based on tensors, to deal with the data transforms involved in relativistic computations for a finite speed of light.
Originally posted by mbkennel
Originally posted by PurpleChiten
reply to post by ImaFungi
Yes, it would still have gravity. It's a result of it's mass, not a result of it's motion.
To be technical the motion of the Earth such as its rotation also contributes to the term which is the source of gravity, but it is quantitatively much, much smaller than the effect from the rest mass of the Earth.
As the regular "warping" is a perturbation to what Newtonian gravity would show, this effect is a perturbation to a perturbation in magnitude.
And yes, it was experimentally measured and confirmed by an extraordinary and heroic experiment called Gravity Probe B, a space mission which took 40 years to plan and execute.
Originally posted by ubeenhad
Originally posted by yampa
Ole Rømer did the first relativity equations for light when he discovered the finite speed of light in 1676. Einstein didn't really discover relativity, he came up with some models, arbitrarily based on tensors, to deal with the data transforms involved in relativistic computations for a finite speed of light.
GAHHHH.
Obviously I was refering to special relativity.
Originally posted by yampa
I'm going to assume you meant General Relativity (published 11 years after Special Relativity). Lord knows why people are starring you there.
Originally posted by ubeenhad
Originally posted by yampa
I'm going to assume you meant General Relativity (published 11 years after Special Relativity). Lord knows why people are starring you there.
It was a typo. Think about it. you just brought up Romer. He discovered that c was finite. I was talking about the equivalence principle. Obviously what I was saying was I was 'not referring to special relativity', since thats what you are annoying me with.
Edit: and they are starring them cause this is 'check on google real quick' bush league crap so they can tell im right*. Frankly, i feel silly being apart of it. But not as silly as these clown shoes who's chronically addicted to being wrong should.
*No offense to my fans, its all statistical generalizing. You could just be clever, but your probably googling. haha.edit on 5-11-2012 by ubeenhad because: (no reason given)
Originally posted by yampa
It is worth reminding yourself that relativity applies to *data*, not to the physical properties of the local object. Thus relativity never gives physical properties to objects. Einstein himself often did not make this distinction and Einstein frequently primed the wrong variable.
Originally posted by PurpleChiten
reply to post by ubeenhad
edit on 5-11-2012 by PurpleChiten because: (no reason given)
Originally posted by ubeenhad
Can we get back to the point at hand, I don't feel Ive pwned a few of you enough about this Acceleration = Gravity argument.
ACCELERATION IS THE SAME AS GRAVITY.
/end bait
Originally posted by ubeenhad
.... The best mathematicians in the world work in fundemental physics.
...
Equivalence principle states that “inertial force and gravitational force are the same thing.” – Or, “acceleration and gravity are the same thing.” Source
Gravitational Mass and the Inertial Mass (the value of mass that gravity acts on and the M in the venerable F=MA) are indeed one and the same.
Originally posted by PurpleChiten
and the acceleration. You are thinking of acceleration due to gravity
Gravity's effect is acceleration, but gravity in and of itself is not an acceleration, it's a force that produces an acceleration