Quantum mechanics is the secret about the origin of the world we live in.
This is a secret that has been explored by mankind's brightest minds for a hundred years. Einstein , Bohr , Schrödinger , Heisenberg , Dirac , Pauli , de Broglie, Feynman ... It can be said that the stars shine in the physics of the 20th century, but almost all of them are in quantum mechanics.
As long as you have a little understanding of quantum mechanics, you will be deeply attracted by its mystery. And these physicists can be said to be obsessed with it, even crazy.
In the beginning, people were just asking everyday questions. For example, what are the things in the world made of? Is atom the smallest unit? Can atoms continue to be decomposed? Why do atoms of different elements have so different properties? What else is inside an atom? What is the light visible to our naked eyes? Wait, wait.
Later, with the emergence of a series of strange phenomena in quantum mechanics. Physicists suddenly realized that the classical world and the quantum world are so different.
1. In the quantum world, wall penetration is a routine operation
The microscopic world is full of mysteries. For example, wall penetration!
In the macro world, wall penetration is impossible. The "Laoshan Taoist priest" walked through the wall, these are just fictional stories.
However, in the quantum world, wall penetration is a routine operation. For example, if an electron is restricted to a region where the potential energy is higher than its own energy, the electron will have a certain probability of passing through the "wall". This phenomenon is not only possible with electrons. Protons, can do that too. Atoms can do that too.
We humans are composed of various atoms. Logically speaking, in theory, people can also walk through walls. But, in our daily life, why can’t it be done?
2. It is completely normal to appear in multiple places at the same time
For example, in the daily world, you can only appear in one specific place at any specific moment, right? For example, if you are in Beijing at this moment, you cannot be in Shanghai. If you are in Hangzhou, you cannot be in Sanya, right?
However, in the microscopic world, electrons can appear everywhere at the same time. In other words, electronics can appear in Beijing, Shanghai, Hangzhou, Sanya, and everywhere at the same time.
3. Flashing out of thin air is a normal event
In our macro world, a cup will not appear on your table out of thin air. If you want to drink water, just go get the cup yourself.
However, in the quantum world, in the vacuum, an electron and a positron can suddenly appear out of thin air. This is a very normal event. It's just that they are fleeting and flash, and it is difficult for you to control them stably.
4. Written at the end
So, you see, the quantum world is so weird. The more we explore, the more incomprehensible we find it. Many people say that the quantum world is so abnormal and too far away from our lives that we should not study it.
You are totally wrong. Why?
First, quantum mechanics is the underlying logic of this world and has nurtured almost all modern advanced technologies. As big as the atomic nucleus , atomic bomb , nuclear power plant that you know, as small as the reason why it hurts when you punch the wall, it can all be traced back to quantum mechanics.
Second, have you ever thought that it may not be that the quantum world is abnormal, but that the perceptions in our daily lives are all illusions caused by the macroscopic scale.
These points, next time, we will discuss in detail~
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-