This article is a summary of the principles of quantum mechanics from the book “The fabric of the cosmos. Space, Time and Texture of Reality ”.
The acceptance of special and general relativity requires the rejection of Newtonian absolute space and time. Imagine that the understanding of "now" in one system is different from "now" in another, if they are not moving together at the same speed. Moving at a high speed in a car, the clock in it ticks at a different speed compared to the clock that is in motionless houses. High in the mountains, due to the deformation of space-time, time flows faster than on the earth far below, where objects are subject to stronger gravity. “Imagine” means that under normal conditions relativistic effects are very scanty and can be ignored. Because of this, the incorrect Newtonian concept works well in our daily life. Therefore, for a deep understanding of how the Universe works, it is required to use intelligence,which compensates for the deficiencies of our senses.
Another revolution that took place between 1900 and 1930 was the research of Planck and Einstein, which led to the formulation of quantum mechanics. The new physics of quantum mechanics manifests itself fully at extremely small distances.
The world according to quantum mechanics
Although the concepts of Newton and Einstein are fundamentally different, they agree on one thing - if you somehow know the state of the Universe now (position, direction and speed of each particle), then using the laws of physics you can predict the state of the Universe as far as you like in the future and past.
Quantum mechanics breaks this tradition. We cannot simultaneously know the exact position and speed of a particle. At best, one can only predict the probability of the outcome of an experiment. Quantum mechanics has been tested by precision experiments for decades.
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Is the potential conflict between the nonlocality of quantum mechanics and SRT fully resolved? Probably yes. Many physicists are comfortable with this, but others have a feeling that this story has not yet been finalized.
So, although from the point of view of most accounting quantum mechanics, entangled particles and SRT harmoniously coexist with each other, some physicists and philosophers believe that the question of their relationship is still open. As history shows, subtle fundamental problems sometimes sow the seeds of future revolutions. And only time will tell if it will be so in this case.