RE: Neutrinos still travel faster than light
November 19, 2011 at 10:20 pm
(This post was last modified: November 19, 2011 at 10:25 pm by Norfolk And Chance.)
(November 19, 2011 at 12:19 pm)IATIA Wrote:Stephanie Pappas, LiveScience Senior Writer Wrote:If the neutrinos are actually going faster than light, though, it might be possible to use them to communicate with the past, Lloyd (Seth Lloyd, a physicist at the Massachusetts Institute of Technology) said. You could send off a faster-than-light message to someone moving at a rapid velocity with respect to you. They could then bounce the faster-than-light message back, and it would arrive before the signal you sent to them.
Surely if you can travel faster than light from a to b, you are still taking some time to travel there then travel back. And some time is more than no time at all.
I'm not sure how exceeding the speed of light could mean you'd receive the answer to your message before you even sent it. Because before you press the button you are at "0". For the answer to arrive before you sent the message then the message would have to take less than no time to get there and back - and as far as I can see, exceeding the speed of light does not mean you are beating time, only light.
Surely the only thing that could happen is that the message could arrive back before you could see it.
I often thought in the past that if you travelled back from a star faster than light (if it were possible to do so in a linear motion, rather than wormholes, bending spacetime etc), you could land, pull up a deckchair and watch the image of yourself landing later.
You are currently experiencing a lucky and very brief window of awareness, sandwiched in between two periods of timeless and utter nothingness. So why not make the most of it, and stop wasting your life away trying to convince other people that there is something else? The reality is obvious.
