Originally posted by whatsup
I think that both the poster who said something can travel faster than light due to relative speeds, and the one who said that something can travel
faster that light, but just not "accelerate" faster are both incorrect. In the first case, C is constant regardless of relative motion, and in the
second case, C is the speed limit (not the accelaration limit). No?
[edit on 14-4-2010 by whatsup]
No, C is the acceleration limit. The whole concept of not being able to accelerate to the speed of light is based on increasing mass.
As you approach the SOL, your relative mass increases, the closer you get to the SOL the closer your mass reaches infinite mass which means you can't
possibly have enough energy available to continue to accelerate.
That is the way that the theory of no FTL travel works.
If you can create an inertia less environment the increase of mass wouldn't play as much a factor and you could accelerate past the speed of light
and or you could harness particles that are already traveling at FTL.
Then there is the possibility of wormholes or rips in spacetime that could allow for the instantaneous speed increase of particles to FTL, and or
jumps from one part of space to another.
The other person about the perception of FTL travel without actual FTL travel was also close to something...
There is the great possibility that as the universe expands time speed up.
The question would be is the universe infinite and new space is being created or is the universe's expansion actually just stretching space/time.
If it is the latter, then as the universe expands, time speeds up. The denser space is, the slower time would move. This is why gravity sources slow
down time, it is the basic concept of time dilation.
This is evident by the apparent acceleration of the expansion of the universe without a potential driving mechanism for it. If it is that the rate of
expansion is constant, but since time is faster, it appears to be accelerating when in actuality it is time that is accelerating and the rate of space
expansion is the same.
The radio transmission could be close enough to the edge of the expanding universe that even though it is traveling at SOL or close there to, it
appers to us to be traveling at four times the SOL because time is slower where we are due to the density of our surrounding space.