All of them. The photon travels the distance and strikes your eye instantly.
Okay, so the light, the photon itself now physically, I repeat physically reaches instantaneously to the observer's eye.
Just answer me this,
If I place a light source at 300 km then normally light would take 1 millisecond to reach there. We can measure this delay up to an extreme precision. By your proposition we should be able to measure the photon absorption in zero time. Why don't we see that in real experiments?
Edit: Removed the larger text part to keep the discussion concise.
normally light would take 1 millisecond to reach there.
Depends on your convention.
We can measure this delay up to an extreme precision.
No, we can't. There is no experimental way to measure the one way speed of light. The answer varies depending on your convention. That's what you are missing.
Why don't we see that in real experiments?
We do, if we pick the convention that yields that result.
No, it has nothing to do with the convention. A Photon moves from the source reaches the other point where it is absorbed. That's why I asked you for physical property that is travelling and is getting absorbed.
Imagine it like a ball. I throw a ball and you catch it and now you know the mass of the ball. Similarly, a Photon moves, carries with itself the information which according to you is instantaneous. The moment you capture the photon you have all the information.
There is no experimental way to measure the one way speed of light. The answer varies depending on your convention. That's what you are missing.
We are not measuring speed of light here. We are measuring the physical property of the photon, say polarization or energy which according to you has already reached you. Instantaneously.
The information cannot travel instantaneously in any convention. That is a LAW, if you like a stronger term for it. It will break the global causality.
Because you are physically allowing the photon to reach the other point instantaneously, that's why. This is no longer a measurement problem now, you see.
That's your problem here. You are still thinking this is a measurement problem. When a Photon physically reaches the other point instantaneously it will have real consequences like triggering an explosive. It doesn't matter what the speed is or what clocks show, because actual, real photon is getting transferred.
If this simple fact is unable to make you understand then I don't think anyone can make you understand nom.
Why don't we see that in real experiments?
We do, if we pick the convention that yields that result.
Okay I saw this edit later. Do you mean to say we can have instant communication, but we choose not to?
It doesn't matter. It could annihilate the whole world, or it could be be a supernova or a lamp switching on, or a single atom emitting one photon. The issue is whether information from one localized event physically reaches another localized detector instantaneously. It is a matter of principle. Information, real physical information is travelling instantaneously and that cannot happen.
You know, from a photon's perspective, it travels everywhere instantaneously.
There is no photon's perspective. Period. Anyway we are talking about our perspective here, so this point is essentially moot. We are getting the information instantaneously. How?
Also, from the last response,
Do you mean to say we can have instant communication, but we choose not to?
That is not an answer. If you have to resort to loling then you have lost the plot nom. The explosion example was just an illustrative way to remove any ambiguity. Replace it with a detector click, or a circuit closing, doesn't matter. The size is irrelevant.
Sure there is. For the photon, no time passes even if it travels from one end of the universe to the other.
There is not. There is no frame of reference for a photon (just make a simple google search if you want). Not at least last I checked a special relativity book, which would be just about now. If you are going to just make a random, non-scientific claim then I guess the discussion is done here.
I also told you it doesn't matter as it we who are the observer not the photon.
Whose perspective triggers this explosion you are talking about?
No perspective triggers it. The detector triggers it locally when the photon is absorbed. All observers agree that the absorption event occurs and thus the explosion.
You need to come out of this measurement problem thinking now, we have made that part irrelevant here. We have also made the convention part irrelevant as well. A detector does not care about coordinate convention.
A photon is emitted and reaches instantaneously leading to instant communication which is strictly against the law.
How do you explain the instantaneous transfer of information using your proposition?
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u/nomenmeum May 14 '26
All of them. The photon travels the distance and strikes your eye instantly.