That was mine
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I heard that an infinite amount of time would pass as an object decelerates from the speed of light, is that true?
nicksauce said:Only massless objects travel at the speed of light, and massless objects always travel at the speed of light, so this question doesn't really make sense.
thecritic said:you can always skip the answer nicksauce posted "Mass can't travel at speed of light, so your question doesn't make sense" by asking "What will happed if we decelerate from the speed of 0.9999999999999999999999c (take the limiting case)" If the declaration time tends to infinite as V tends to C, you got your result.
Your lack of an answer was the correct answer. A massive object has a timelike four-momentum and an object traveling at c has a lightlike four momentum. So the question is fundamentally flawed in the same way as any question that began "What if 1 equaled 0"That was mine said:Assuming that the object was already traveling at light speed, what would happen if it decelerated?
The question was asked to me earlier today, and I couldn't think of an answer.
That was mine said:yes i know that's not possible , but this is a thought experiment
That was mine said:I heard that an infinite amount of time would pass as an object decelerates from the speed of light, is that true?
A.T. said:If by "object" you mean some energy moving at c as light: It becomes matter + antimatter if you "decelerate" it below c:
http://en.wikipedia.org/wiki/Pair_production
Vanadium 50 said:That's really, really misleading. Yes, one can pair produce particles with photons, but calling this a consequence of deceleration is really not right. If I apply a force to a photon, I can change it's energy or direction without any particle production.
DaveC426913 said:I am not sure what question the above post answers. (It is all nonsense anyway. Travelling at near light speed does not allow you to pass your hand through invisible objects!)
If the question is still "what would happen if you decelerated from the speed of light", then the answer is still "this is an impossible scenario".
If you want a sensical answer, you'll have to reform the question.
As energy moving a light speed, he is composed of massless photons. Photons do not have a frame of reference and do not experience time.tickle_monste said:...I'm curious as to what he would see during his orbit. Nothing at all? Certainly light can't catch up to him, but he's constantly intersecting light along his path, how does he 'see' this?
DaveC426913 said:As energy moving a light speed, he is composed of massless photons. Photons do not have a frame of reference and do not experience time.
tickle_monste said:A photon is emitted here at this time, and absorbed there at that time. They exist for a duration, and the longer they exist, the more they are affected by the external environment: gravitational lensing, reflection, refraction, etc. I guess I'm just having a hard time seeing how the fact that "a photon has no reference frame and does not experience time" is not the same as "a photon is only affected by things 'instantaneously' rather than for a duration, and thus could not, if it were conscious, 'feel' or 'relate to' any passage of time" (please tell me if that doesn't make sense because I've got something very specific in mind).