- #1
robousy
- 334
- 1
Hi,
Can someone help explain why something that has the ability to move faster than c can potentially send a signal backwards in time - thus ruling out superluminal travel.
If a 'superluminal' ray starts out at t=0 then even if it does travel faster than light, any information it transmits anywhere in space will reach that point at t>0.
As I understand things the 'backwards in time' signalling occurs when you consider Lorentz Invariance but I would like this to be explained a little more.
Thanks
Can someone help explain why something that has the ability to move faster than c can potentially send a signal backwards in time - thus ruling out superluminal travel.
If a 'superluminal' ray starts out at t=0 then even if it does travel faster than light, any information it transmits anywhere in space will reach that point at t>0.
As I understand things the 'backwards in time' signalling occurs when you consider Lorentz Invariance but I would like this to be explained a little more.
Thanks