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Can two versions of reality exist at the same time? Physicists say they can — at the quantum level, that is.
Researchers recently conducted experiments to answer a decades-old theoretical physics question about dueling realities. This tricky thought experiment proposed that two individuals observing the same photon could arrive at different conclusions about that photon's state — and yet both of their observations would be correct.
For the first time, scientists have replicated conditions described in the thought experiment. Their results, published Feb. 13 in the preprint journal arXiv, confirmed that even when observers described different states in the same photon, the two conflicting realities could both be true.
This perplexing idea was the brainchild of Eugene Wigner, winner of the Nobel Prize for Physics in 1963. In 1961, Wigner had introduced a thought experiment that became known as "Wigner's friend." It begins with a photon — a particle of light. When an observer in an isolated laboratory measures the photon, they find that the particle's polarization — the axis on which it spins — is either vertical or horizontal.
However, before the photon is measured, the photon displays both polarizations at once, as dictated by the laws of quantum mechanics; it exists in a "superposition" of two possible states.
Once the person in the lab measures the photon, the particle assumes a fixed polarization. But for someone outside that closed laboratory who doesn't know the result of the measurements, the unmeasured photon is still in a state of superposition.
That outsider's observation — their reality — therefore diverges from the reality of the person in the lab who measured the photon. Yet, neither of those conflicting observations is thought to be wrong, according to quantum mechanics.
Why would it have anything to do with coincidences?
originally posted by: neoholographic
a reply to: Woodcarver
Explain exactly why this wouldn't have anything to do with coincidence if all is Quantum like many Physicist believe.
You can't just make statements in a vacuum. Please back up your assertion and show me scientifically what would stop two different outcomes being observed on a classical level if all is Quantum.
originally posted by: neoholographic
a reply to: Woodcarver
You're doing exactly what Pseudoskeptics do. You can't refute anything I have said with Science so you attack the source. Did you even read the article? Most of the quotes are from Scientist who carried out the experiment.
You can verify both of them," study co-author Martin Ringbauer, a postdoctoral researcher with the Department of Experimental Physics at the University of Innsbrück in Austria, told Live Science.
If Live Science is unreliable, why did the co-author of the study talk to them. Here's more:
"It seems that, in contrast to classical physics, measurement results cannot be considered absolute truth but must be understood relative to the observer who performed the measurement," Ringbauer said. "The stories we tell about quantum mechanics have to adapt to that," he said.
Again, more from the co-author of the study.
You can't refute what's being said so you attack the source. That's just an old tactic that doesn't work.
So please, refute what was said with science.
If all is Quantum, what would prevent 2 observers from seeing 2 different outcomes if these experiments are replicated?
Please answer the question using science and don't try to deflect.
originally posted by: neoholographic
a reply to: Woodcarver
LOL, can you be anymore predictable?
The Pseudoskeptic deflection is strong in this one
First you deflect by attacking the source when most of the article is about the study and they talked to the co-author of the study.
Next, you try to attack me and my credentials.
You do everything but refute scientifically what's being said.
I've been a Member of ATS since 2012 and have talked about my credentials numerous times.
I'm not going to let you deflect because you don't have a clue as to what you're talking about. Answer these simple questions.
If all is Quantum, what would prevent 2 observers from seeing 2 different outcomes if these experiments are replicated
Secondly, do you even know what all is Quantum means and why many Physicist believe all is Quantum?
I don't want deflection, I don't want evasive tactics just answer the questions using science.
"It seems that, in contrast to classical physics, measurement results cannot be considered absolute truth but must be understood relative to the observer who performed the measurement," Ringbauer said.