Has quantum theory been verified in terms of discovery by more than one individual with identical results? I mean both individuals being unaware of each others' observations and both believing to be the first without knowing what to expect.
Quantum Mechanics is right. Classical Mechanics is wrong.
The Reference Frame: Sidney Coleman: Quantum mechanics in your face
It is the GHZ state:
Greenberger–Horne–Zeilinger state - Wikipedia
Classical Mechanics predicts a different answer. That is what Sidney Coleman is talking about in his old blurry lecture.
The Reference Frame: Sidney Coleman: Quantum mechanics in your face
It is the GHZ state:
Greenberger–Horne–Zeilinger state - Wikipedia
Classical Mechanics predicts a different answer. That is what Sidney Coleman is talking about in his old blurry lecture.
I just have to comment on this, what we know is: For the ones reading the history books, Hooke was known for plagiarism. There are traces of Newton painting Hooke as such, and traces of Newton trying to eradicate any contributions done by Hooke and also trying to remove any and all portraits of him.
None of us knows what actually happened.
I know some actual psychopaths, some have a really weird way of making it seem like they're doing YOU a favour even though it's the other way around. Some have a strange ability to twist happenings into their favour.
Anyway, sorry I'm falling in and out of the discussion, so incredibly busy these days!
This is supposed to be the slow season, but I hardly have time to do anything but work...
Is there another person in existence that has come to the same conclusions as Sydney without being aware of Sydney's existence or his point of view? Sydney presents his viewpoint which then becomes the framework of our thoughts. Accepting it or not is irrelevant.
I guess you are talking here about entanglement Galu? The way I try to get my head around it is to think about it from the photons point of view. If two entangled photons leave a particle, from our perspective, after a second they could be as much as 2 x 330^6 metres apart. However, from the photons perspective, no time has passed and if no time has passed for them, then they are still together, or just a tiny bit apart and enough to interact with each other. Of course, you quickly get to start thinking about 'folded dimensions' (my way of saying it - I don't know how else to) and the mind boggles because that is the nature of reality. Clearly if Feynman said it was not understandable, it isn't!
If you look at the dual slit experiment and how the dots and waves build up on the detector screen, it seems for a photon, it travels through space as a wave, but as soon as it interacts with matter or another particle it behaves like a particle (or perhaps its 'converted' to a particle).
Every time you use your mobile, or any other device jam packed with microchips, you are using a product that relies on solid state physics and that in turn rests very heavily on QM. So, this stuff does work! Where I worked earlier in my career, we had about 20 of these PhD guys in the factory (and another 10 or so material/chemical engineering PhD guys) working on process technology. All mind boggling stuff above my pay grade.
A total mind warping of Quantum Mecanics is the double slit experiment where you get the same result throwing particles one at a time.
The particle has gone through both slits interacting with itself.
There is no way to understand QM, however, all calculations using QM theory give exact predictable results.
The particle has gone through both slits interacting with itself.
There is no way to understand QM, however, all calculations using QM theory give exact predictable results.
I was talking about the Feynman 'sum over histories'.
The sum over all possibilities: The path integral formulation of quantum theory << Einstein-Online
According to Feynman, rather than taking a single path from A to B, particles take every possible path connecting these points, and they take them all simultaneously.
In the case of the double-slit experiment the mutiplicity of paths in which a particle travels through one slit can interfere with the mutiplicity of paths in which it travels through the other, causing the interference.
This is my "understanding".
I don' t imagine the particle has gone through one slit or the other, this is unknown. It has gone through considering all available paths weighted with probabilities
Science demands that a theory be testable.
Despite quantum physics being based on a fundamental randomness in nature, scientists can still test quantum theories.
Scientists can repeat an experiment many times and confirm that the frequency of its various outcomes conforms to the probabilities predicted by quantum theory.
Scientists are seldom unaware of the work of other scientists in the way you suggest, instead they test each other's theories then either confirm or deny them.
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Interesting with the DS experiment is that if you put a first detector closer to the photon emitter than the screen and the detector plate behind it and you turn it on, no photons are detected behind the dual slit screen. If you turn the first detector off, then you detect photons behind the screen on the rear detector.
That's why I imagine a photon as a wave or 'bubble'. It is taking a multiplicity of paths, but as soon as it interacts with another photon or particle, it's behaviour can be described in particle terms. Its like popping a bubble with a pin - you can prick the bubble anywhere on the surface and it goes 'pop' 😀
I'm still trying to understand descriptions I've read about electron locations. If it can be in one place or even more, as likely as any other, is it one unusual particle that has weak or very little interaction with a force such as time? If it can be one in many places, that's the only thing I come up with.
If the world was oblivious to quantum physics, would I be talking on my cell phone or participating in this thread? Where would we be without quantum physics/mechanics?
was the telegraph invented using quantum physics?
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They used it with no awareness.
As living creatures that were breathing before atmospheric pressure, oxygen and nitrogen had been invented.
As people watching TV not aware of the complexity.
In Feynman's model, each quantum particle path represents a position in the cycle of a wave.
When the phase information from all the paths is added together we can assign a 'probability amplitude' to the particle.
The probability amplitude is illustrated by the 'wave function before detection' in the diagram below.
An externally hosted image should be here but it was not working when we last tested it.
On being detected, the probability amplitude 'collapses' and the exact location of the particle becomes known.
I do struggle with the World of Quantum Mechanics,
The Reference Frame: Sidney Coleman: Quantum mechanics in your face
Very odd, IMO. 😕
As a man with a significant backup of ideas and images, I can only commend this image of Snoopy and Woodstock trying to understand what we are dealing with.
You have to go a bit cross-eyed. How it is.
The Reference Frame: Sidney Coleman: Quantum mechanics in your face
Very odd, IMO. 😕
As a man with a significant backup of ideas and images, I can only commend this image of Snoopy and Woodstock trying to understand what we are dealing with.
You have to go a bit cross-eyed. How it is.
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No, there was understanding of electrical properties arrived at by experimentation. That knowledge was then implemented in a practical way. Insight built upon previous discovery and knowledge. Have you heard of a guy named James Burke? He had an awesome series of TV episodes in the 80's focused on the evolution of human ingenuity and discovery and how more and more complex inventions came about by building on previous ones. Nothing happened out of thin air.
The invention of the wheel may have come about by somebody watching a dung beetle in the desert.
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I think I told you before that the wheel was the easy part!
For example, the ancients are thought to have used round logs across which they rolled heavy blocks of stone during the construction of their monuments.
To make full practical use of the wheel, we had to wait for some bright spark to invent the axle! 😎
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