Physics, Astronomy & Cosmology / Re: Is light an independent entity, or is it an effect of a larger mechanism ?« on: 14/10/2019 10:11:54 »
Concerning a particular type of particle which, when its 'state' was changed then a matching particle's state also changed - instantaneously, no matter how widely seperated in distance (thus appearing to break the lightspeed limit).You are hearing about entangled particles. Difficult to describe in detail, but it has to do with correlation and quantum statistics and also what we know about the particles.
An analogy: lets say a friend puts a rh glove in one envelope and a lh glove in another but doesnít tell you which is which. We could say the contents of those envelopes are entangled and there is a correlation between the Ďstateí of the gloves in each envelope.
So, you now send one envelope to another person on other side of the world and keep one. If you open your envelope (measure the state of your glove), you instantly know the state of the other glove, but nothing has changed other than your knowledge. We can do the same with particles eg electrons or photons and when we measure the state of one we can be sure of the state of the other.
However, quantum statistics are more complicated than everyday statistics so this is a fascinating area of misunderstanding, and you will need some maths to understand what is happening.
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