Entanglement (physics) | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-31

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Quantum_entanglement


00:04:17 1 History
00:08:38 2 Concept
00:08:47 2.1 Meaning of entanglement
00:11:55 2.2 Paradox
00:13:39 2.3 Hidden variables theory
00:14:45 2.4 Violations of Bell's inequality
00:16:15 2.5 Other types of experiments
00:17:52 2.6 Mystery of time
00:19:07 2.7 Source for the arrow of time
00:19:41 2.8 Emergent gravity
00:20:05 3 Non-locality and entanglement
00:21:54 4 Quantum mechanical framework
00:22:20 4.1 Pure states
00:30:06 4.2 Ensembles
00:35:57 4.3 Reduced density matrices
00:39:53 4.4 Two applications that use them
00:40:39 4.5 Entanglement as a resource
00:42:21 4.6 Classification of entanglement
00:47:07 4.7 Entropy
00:47:23 4.7.1 Definition
00:51:55 4.7.2 As a measure of entanglement
00:54:23 4.8 Entanglement measures
00:55:14 4.9 Quantum field theory
00:55:30 5 Applications
00:56:29 5.1 Entangled states
01:00:54 5.2 Methods of creating entanglement
01:01:54 5.3 Testing a system for entanglement
01:04:05 6 Naturally entangled systems
01:04:27 7 Photosynthesis
01:05:10 8 Living systems



Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago.

Learning by listening is a great way to:
- increases imagination and understanding
- improves your listening skills
- improves your own spoken accent
- learn while on the move
- reduce eye strain

Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone.

Listen on Google Assistant through Extra Audio:
https://assistant.google.com/services/invoke/uid/0000001a130b3f91
Other Wikipedia audio articles at:
https://www.youtube.com/results?search_query=wikipedia+tts
Upload your own Wikipedia articles through:
https://github.com/nodef/wikipedia-tts
Speaking Rate: 0.9410776976419057
Voice name: en-AU-Wavenet-C


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
=======
Quantum entanglement is a physical phenomenon which occurs when pairs or groups of particles are generated, interact, or share spatial proximity in ways such that the quantum state of each particle cannot be described independently of the state of the other(s), even when the particles are separated by a large distance—instead, a quantum state must be described for the system as a whole.
Measurements of physical properties such as position, momentum, spin, and polarization, performed on entangled particles are found to be correlated. For example, if a pair of particles is generated in such a way that their total spin is known to be zero, and one particle is found to have clockwise spin on a certain axis, the spin of the other particle, measured on the same axis, will be found to be counterclockwise, as is to be expected due to their entanglement. However, this behavior gives rise to seemingly paradoxical effects: any measurement of a property of a particle performs an irreversible collapse on that particle and will change the original quantum state. In the case of entangled particles, such a measurement will be on the entangled system as a whole. Given that the statistics of these measurements cannot be replicated by models in which each particle has its own state independent of the other, it appears that one particle of an entangled pair "knows" what measurement has been performed on the other, and with what outcome, even though there is no known means for such information to be communicated between the particles, which at the time of measurement may be separated by arbitrarily large distances.
Such phenomena were the subject of a 1935 paper by Albert Einstein, Boris Podolsky, and Nathan Rosen, and several papers by Erwin Schrödinger shortly thereafter, describing what came to be known as the EPR paradox. Einstein and others considered such behavior to be impossible, as it violated the local realist view of causality (Einstein referring to it as "spooky action at a distance") and argued that the accepted formulation of quantum mechanics must therefore be incomplete. Later, however, the counterintuitive predictions of quantum mechanics were verified experimentally in tests where the polarization or spin of entangled particles were measured at separate locations, statistically violating Bell's inequality, demonstrating that the classical conception of "local realism" cannot be correct.
In earlier tests it couldn't be absolutely ruled out that the test result at one point (or which test was being performed) could have been subtly transmitted to the remote point, affecting the outcome at the second location. However so-called "loophole-free" Bell tests have been performed in  ...