Proof that Einstein was wrong...?

Question

Is what i would like to see.Barring that,someone could explain why faster than light is impossible in such a way that can be easily understood.wouldnt the gravitational force of a black hole be "ftl"? Didnt the big bang expand the universe at ftl speeds?I guess i just dont like absolute rules.I hope that perhaps oneday ,this law will fall.

Answer 1

Quantum entanglement might be a disprove of Einstein's "non faster than the speed of light rule".
Quantum entanglement states that two particles separated by light years, but which are entangled, will display similar characteristics when measured and that these characteristics will be simultaneous.
Think about it.
Two electrons are released by, say, a calcium atom. Quantum entanglement states that if one travels light years in one direction and the other light years in the opposite direction, when you measure one to see the type of spin it has, what you measure will be simultaneously adopted by the other electron (since they are light years apart, this simultaneity means the information went from one electron to the other faster than the speed of light).

Answer 2

The thing is, most people interprete Einstein's relations wrongly, assuming that nothing can travel faster than the speed of light in vacuum. The only assumption we can make is that no massive particle can be accelerated to the speed of light or further. But it doesn't exclude the possibility that there are superluminal objects moving naturaly faster than light.
This comes from the expression of relativistic mass, which is:
M = m/sqrt(1-(v^2/c^2)), where M is a particle's mass, m its rest mass, and v its velocity. You can see that, if you accelerate a massive particle, its velocity will increase, making its mass increase with it, in such a way that when the velocity reached values sufficiently near to c, than the mass would become almost infinite, and therefore we would be unable to accelerate it, for we would need an infinitely powerful force to do it.

Answer 3

I'll think about your first part.

The gravitational acceleration of a black hole may be ftl, but that doesn't mean that an actual object falling in will go FTL.

The universe may have expanded at faster than light at the beginning (I'm not even sure about that), but at that stage the four fundamental forces were combined into one so our current physics simpy didn't apply.

There are ideas about warping space so that one may go to a location faster than light would get there, but without actually "traveling" through space at ftl.

There is also quantum tunneling, a little understood phenomena which appears to allow for ftl transmission of data.

http://en.wikipedia.org/wiki/Quantum_tunneling

Answer 4

The reason a particle can't travel faster than light is that as a particle's velocity gets closer and closer to the speed of light, it's mass increases without bound. Therefore, to achieve light speed, an object would possess infinite mass, and therefore require infinite energy to move. Obviously, this can never happen. And all gravity in the universe, including black holes, is transmitted at exactly the speed of light.

Answer 5

Universe is a fantastic place, what is believed to be a limit today would be an outmoded goal in a few years. The key point here is not to repeat as a papagayo what is clearly stated by equations but to understand that an equation is just a model. In fact, what Einstein proposes has several interpretations, basically depends upon the concept of speed and mass. The basic idea is to approach the concept completely the other way: what is mass and what is speed?
what does it mean infinite mass?

Answer 6

To see why you can't travel faster than light

As a particle travels faster it gains mass. So, it requires more energy to accelerate. As the particle approaches light speed its mass approaches infinity. It then requires infinite energy to accelerate and so can never reach light speed. There are some particles which are believed to travel faster than light but they have no inherent mass and so do not suffer from the constraints of increased mass.