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Smiles302
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Link to guy's blog post: http://ftlfactor.com/2011/04/23/how-does-special-relativity-allow-effectively-faster-than-light-travel/#comment-117
He says he has a PhD in space physics.
My understanding of special relativity was that the speed of light is always constant no matter what reference frame you are observing from. That's correct yeah?
he says:
Does he have special relativity wrong? Or is this any way possible?
I haven't studied general relativity but I thought you had to use general relativity if you were dealing with acceleration?
He says he has a PhD in space physics.
My understanding of special relativity was that the speed of light is always constant no matter what reference frame you are observing from. That's correct yeah?
he says:
According to Special Relativity theory, neither an Earth-based observer nor a traveling observer can ever measure that the traveler travels faster than light speed. This is the headline that is generally known. However, if you look at the whole trip to a another star something interesting happens. Assuming that trip distance is measured at both ends of the trip, the distance will be measured in approximately the Sun’s reference frame so that the Lorentz contraction factor is approximately 1 and length contraction is insignificant. If the traveler considers his or her own experience, then the traveler’s time measurement is the important one and assuming relativistic speeds are reached the Lorentz contraction factor varies from 1 and time dilation is significant. It is in this mixed-reference frame perspective that Special Relativity theory allows travel at effectively faster than light speed.
Does he have special relativity wrong? Or is this any way possible?
I haven't studied general relativity but I thought you had to use general relativity if you were dealing with acceleration?
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