# Wheeler Feynman absorber theory and non locality

• entropy15
In summary, according to the Wheeler Feynman absorber theory, electromagnetic radiation requires both an emitter and an absorber. In a universe with only a single electron, disturbing it would not produce radiation or experience radiation resistance. However, in the real universe with multiple emitters and absorbers, radiation resistance cannot be used to detect absorbers due to its uniformity in all directions. This is due to the long-range nature of electromagnetic forces and the smoothness of the universe on a large scale. The same principle applies to gravity. However, for localized forces such as the strong and weak interaction, particles do have knowledge about absorbers in their vicinity through the exchange of virtual particles, demonstrating that the process is non-local in nature.
entropy15
As per the Wheeler Feynman absorber theory, there cannot be electromagnetic radiation
without an emitter and absorber.

If we had only a single electron in the universe then disturbing it (accelerating it) would not produce any radiation since there was nothing to absorb it. Hence it would also not experience any radiation resistance.

In the case of electromagnetic waves in the real universe with so many emitters and absorbers, we cannot use radiation resistance to check the presence of absorbers in the vicinity of the emitter.
This is due to the fact that radiation resistance is the same in all the directions.

This can be attributed to the fact that electromagnetic forces are long range forces.
Since the universe is smooth on a large scale, the number of absorbers in any direction is uniform and hence radiation resistance the same in all directions.

The same would apply for gravity since it is also a long range force.

But what about the nuclear forces - the strong and weak interaction. These are localized over small distances. So do the particles interacting with these forces have knowledge about absorbers in their vicinty. Is the process non local?

The answer is yes. The process is non local in nature. It is explained by the concept of virtual particles. Virtual particles are exchanged between interacting particles and this exchange can be considered as a form of communication between the two particles. Hence the particles know about the absorbers in the vicinity of the emitter.

## 1. What is Wheeler Feynman absorber theory?

Wheeler Feynman absorber theory is a concept in quantum electrodynamics that suggests that the electromagnetic field is created and absorbed by charges in the universe. It proposes that all electromagnetic interactions are mediated by the exchange of virtual photons between charged particles.

## 2. How does the absorber theory explain non-locality?

The absorber theory suggests that the electromagnetic field is non-local, meaning that the effects of an interaction can be felt instantaneously at a distance. This is because the theory does not rely on the exchange of physical particles, but rather on virtual particles that can exist and interact at any point in space-time.

## 3. How does Wheeler Feynman absorber theory differ from other theories?

Wheeler Feynman absorber theory differs from other theories, such as the traditional quantum field theory, in that it does not require the concept of action at a distance. Instead, it proposes that the electromagnetic field is created and absorbed by charged particles, providing a more unified and consistent explanation for the behavior of electromagnetic interactions.

## 4. What evidence supports Wheeler Feynman absorber theory?

There is no direct experimental evidence for the absorber theory, but it is consistent with many observed phenomena, such as the behavior of virtual particles in quantum electrodynamics and the concept of non-locality in quantum mechanics. Additionally, the theory has been used to make accurate predictions in certain calculations.

## 5. Are there any criticisms of Wheeler Feynman absorber theory?

Some critics argue that the theory is not mathematically consistent and does not fully explain all aspects of electromagnetic interactions. Others suggest that it relies too heavily on the concept of virtual particles, which are still not fully understood in the scientific community. However, the theory continues to be studied and debated by scientists in the field of quantum electrodynamics.

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