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# The one way speed of light is instantaneous

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 Voting Style: Open Point System: 7 Point Started: 7/7/2015 Category: Science Updated: 2 years ago Status: Post Voting Period Viewed: 1,058 times Debate No: 77376
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Posted by kkris1 1 year ago
I think we can synchronize distant clocks:
Let"s have a flashlight which rotates with angular velocity "w" while emitting the light. At a distant r from the flashlight let"s have two clocks A and B separated by distance d. Linear velocity of the beam at r from the flashlight will be v=wr. So rotating beam of light will activate the clock A and a certain time later will activate clock B. For our experiment to yield high enough accuracy we would need r and was as large as possible. So we would need fast spinning powerful flashlight which could shine the light visible from the big distance.
Luckily the Creator left such a flashlight for us. It is called a pulsar. As we know pulsars can spin extremely fast (even more than 700 rotations/s) and are very stable, rivalling accuracy of atomic clocks.
Let"s make a rough calculations: if r=1100ly(=~10^19m, w=10hz our linear speed will be 6.28x10x10^19m/s=6.28"10^20m/s.
If our distance d from A to B is 6.28x10^6m (less than 0.1s for the light to travel from A to B and back; this is important that we are able to exchange information between clocks A and B within the time shorter than one full rotation of the pulsar), the signal from the pulsar will arrive at A 10^-14s earlier than at clock B. I think that if we are not very fussy, we could say the signals arrive at A and B simultaneously.
Now to synchronize the clocks, at the beginning of the pulse from the pulsar detected at A we send the information from A to B that at the beginning of the next pulse from the pulsar clock at B should be started. When the next pulse from the pulsar arrives, we start both clocks A and B which will now be (almost perfectly) synchronized.
Having two clocks synchronized, we can easily measure one way speed of light.
Kind regards,
Kris
Posted by hldemi 2 years ago
The reason why black hole has effect on photon is because black hole is not moving at the speed of light. If both black hole and photon moved at the speed of light their interaction would be physically impossible.
Posted by hldemi 2 years ago
This is a trick debate. The pro is right, but only relative to photon traveling at the speed of light in vacuum. To the observer that photon is traveling at the speed of light but to the photon its instant. Time only stands still for photons moving through a vacuum, where their speed through space equals c (the speed of light in vacuum) and thus their speed through time equals 0. So for photon time is stopped= moving is instant.
Posted by Ramshutu 2 years ago
I'm assuming you take the burden of proof to show as you are making the positive claim? I'm interested in taking this one up.
Posted by Couchsessel 2 years ago
Uhm, what exactly are you trying to say? Could you explain your point some more?
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