What does quantum electrodynamics say? What can quantum mechanics explain?

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The Three Laws of Quantum Mechanics and Their Explanations.

1. Explanation of the first law of quantum mechanics, faster than the speed of light;

2. The second law of quantum mechanics explains that the universe has no gravity, for example: photons can overcome all gravitational forces to propagate freely and entangle;

3. Explanation of the third law of quantum mechanics, cosmic theology, for example, if I don't measure cats, Schrödinger's cat won't die, and if I don't measure cats, Schrödinger's cat won't live.

The laws of quantum mechanics explain the entangled state of quantum.

The most fascinating characteristics between quantum is "quantum entanglement", which can be said to be famous in physics, many famous physicists have been surprised by these characteristics of quantum, such as Einstein has made his own views on the state of quantum entanglement, he said that "quantum entanglement" is: ghost-like ultra-long-distance action, but this is not that Einstein does not recognize quantum mechanics, on the contrary, Einstein is also one of the founders of quantum mechanics, he just thinks that the current scientific research is not enough, There is no way to understand the principle of quantum entanglement, and I believe that in the future, human beings will definitely be able to figure out the cause of quantum entanglement.

Quantum mechanical laws explained, superposition states of quanta.

Schrödinger's cat, I believe many people have understood, through the experiment, let the quantum state affect the object in reality, so that the poor cat fell into a paradox - we can't figure out the state of the cat, death and survival are possible, at this time the cat is actually the same as the superposition state in the quantum, both states may exist, if you don't actively observe, there is no way to find the exact state of the cat, the same is true when the quantum superposition, many quanta may be "waves" or "particles", For example, photons and light waves are two states that can be converted. However, when the researcher is not observing, it is impossible to know the state of the particles.

The laws of quantum mechanics explain that string theory is true.

Speaking of the contradiction between quantum mechanics and relativity, we have to mention string theory, it can be said that string theory is a theory that proves the nature of the universe, but unfortunately, we have not been able to confirm the truth of string theory, if it can be confirmed one day in the future, we can understand the birth of the universe and many problems that have plagued us for a long time, it can be said that human civilization will usher in a respectful change, because in string theory, the universe we live in is multidimensional, and the universe that human beings feel is the D3 membrane of hunger in 9+1 dimensional space-time.

Quantum mechanics can explain microscopic physical phenomena, such as the structure of atoms and atoms, the photoelectric effect, chemical reactions, and other related physical processes. It is a quantitative description of the interactions between elementary particles in the microscopic world, and argues how an object changes in time depending on the situation.