Do Photons Coexist in the Same Space?

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Discussion Overview

The discussion revolves around the nature of photons and their coexistence in space, particularly in the context of theories of relativity, time dilation, and the behavior of particles at light speed. Participants explore concepts related to the implications of light speed on the existence and properties of photons, as well as the principles governing particle behavior in quantum mechanics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that if light is "stuck in time," then photons must coexist in the same space, leading to the question of whether there is only one photon shared among all observers.
  • Another participant counters that no material body can reach the speed of light, emphasizing that all matter travels at speeds less than light and that the concept of light having a "point of view" is meaningless.
  • A different participant clarifies that while fermions cannot occupy the same quantum state due to the Pauli Exclusion Principle, bosons, including photons, can occupy the same space and quantum state.
  • It is noted that while objects appear squished from a moving frame, they do not become "infinitely thin," challenging the initial interpretation of relativistic effects.

Areas of Agreement / Disagreement

Participants express disagreement on several points, particularly regarding the implications of light speed on the nature of photons and the interpretation of time dilation. The discussion remains unresolved with multiple competing views presented.

Contextual Notes

Some statements rely on interpretations of relativistic physics and quantum mechanics that may not be universally accepted. The discussion includes assumptions about the nature of light and the behavior of particles that are not fully explored.

Aelof
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Lately, I've been reading over the theories of relativity and special relativity and the impossibility of reaching the speed of light. I found all of this fascinating, and so I kept on in my studies. I then began taking a closer look at time dilation. The theory behind time dilation , as interpreted by me, is that since light is at light speed, it is stuck in time. This bothered me further when I read that objects going at the speed of light are supposed to flatten and squish until they are infinitely thin (this was backed up by one of Einsteins equations). The point about that that bothered me, is that no two units of matter may coexist in the same space. If light its stuck in time, then the distances from "lights" point of view are null. This would mean that every photon coexists within the same space. Does that mean that there is only one photon that we all share? Or am I just missing some blatantly obvious point.
 
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This bothered me further when I read that objects going at the speed of light are supposed to flatten and squish until they are infinitely thin (this was backed up by one of Einsteins equations). ...
Or am I just missing some blatantly obvious point.
It seems you've missed the main point "the impossibility of reaching the speed of light". No material body will ever be observed to reach the speed of light from any frame of reference. All matter will appear to be traveling at v < c, and light will always be traveling at c from every point of view.

Things do look squished from a moving frame, but never 'infinitely' thin.

The theory behind time dilation , as interpreted by me, is that since light is at light speed, it is stuck in time.
What does this mean ? On reflection, I know that it is meaningless, so no need to explain.

I suggest you read through some of the threads in the forum where these issues are discussed. You've jumped to some weird conclusions.
 
If light its stuck in time, then the distances from "lights" point of view are null.
Light does not have a "point of view" nor "fframe of reference"- so the rest of what you say is moot.
 
Aelof said:
The point about that that bothered me, is that no two units of matter may coexist in the same space.

That's not entirely true. The particles that matter is typically comprised of, called fermions, must obey the Pauli Exclusion Principle, which means they cannot have the same quantum state. These particles have half integer spin (1/2,3/2, etc)

There is another kind of particle, called a boson, and two bosons may indeed occupy the same quantum state. Photons happen to be bosons, and so there is no worry about them occupying the same space. Bosons have integer spin.

(Furthermore, composites of fermions can be bosons; for instance, atoms, though they are made of fermions, can be bosons, which is why they can form Bose-Einstein Condensates.)
 

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