If there is any physical experiment in human history that is the most
"Terrifying", the double-slit interference test is ranked second, but I am afraid no one dares to admit it is first. Various parallel universe explanations have been put together.
Even more bizarre is the determinism of consciousness. Even metaphysical explanations come out as demons. In fact, they all do not understand the nature of quantum mechanics and only make wild guesses after reading a few press releases.
When it comes to the interference experiment that Li Yu wants to do, since it is photon, it is somewhat easier to understand and accept. After all, photon has no mass. In professional terms, it is a boson.
Later, humans also used particles with mass, that is, material particles, professionally called fermions, to conduct double-slit interference experiments.
The first successful double-slit interference experiment using electrons. In modern times, single-electron double-slit interference was completed in 2012.
This is incredible! So-called
"Terror" refers to it! Many people who don't understand are directly led to the rhythm. Because for a long time everyone has accepted that photons are waves and can interfere.
But electrons are basic particles that make up matter with mass. How can it complete wave interference with itself?
I can’t even think of it! Especially after the scientific community also explained it with parallel universes, it exploded directly on the spot.
Many unknown truths,
People who "overestimate their own capabilities" have begun to engage in the various consciousness determinism and metaphysical theological viewpoints just mentioned, which are ridiculous.
There are even various idealistic arguments, but those in the scientific community who really understand them dismiss them.
Many times Li Yu didn't bother to pay attention to these people, but would use some theoretically better methods to
"Scary" things scare them. Everyone must know about Yang's double-slit interference. High school students can do this experiment, so they can talk about the double-slit interference of electrons.
It is extremely difficult to explain this thing, because in quantum mechanics, particles do have wave-particle duality.
To explain electron interference experiments, you need to know a lot of basic knowledge of quantum mechanics. So Li Yu thought of a famous mythical beast in quantum mechanics: Schrödinger's cat.
In fact, most people don’t understand it either
The true meaning of "Schrödinger's cat", not to mention Schrödinger's truly powerful wave function. But it doesn't matter, because Li Yu didn't say anything about this immortal cat.
Because the wave function is very interesting, because according to the wave-particle duality, humans also have wave-particle duality, that is, humans also have wave properties.
So Li Yu told these trolls: According to the theory of quantum mechanics, you also have the attribute of a wave, and a material wave is a probability wave, which is the probability of matter appearing at a certain location in space.
Your wave function is dispersed throughout the space, so the probability that you may appear anywhere in the next second is even on Mars. Theoretically, please note that it is theoretically not zero.
Hearing this, the gangsters went crazy. Needless to say, the rest of Li Yu drove these people crazy. Let me tell you secretly here. In fact, according to de Broglie's formula, the wavelength is equal to Planck's constant divided by the momentum. The calculated value of this wavelength can be said to be so small that it can be ignored.
According to the probabilistic explanation of the Schrödinger equation, even if you have existed since the Big Bang, until now, the probability of you teleporting to Mars is so small that it will never happen once.
So don't worry! Going back to the double-slit interference of single electrons, this experiment indeed touches the heart of quantum mechanics.
Many people misunderstand this experiment and then think about which gap an electron passed through. In fact, this is wrong.
The reason why everyone thinks so is because electrons are drawn as small balls in textbooks. But in fact, the physics community still didn't know what the structure of electrons was, or whether there was a lower limit to its size, until the time when Li Yu traveled through.
——Although electrons are the earliest fundamental particles discovered by humans, little is still known about them. In the core idea of quantum mechanics, the properties of microscopic particles have no meaning when you measure them.
And it is not just a small ball, its spatial distribution is a probability distribution. Therefore, it is impossible for you to know the actual position of the electron. If you know it, it means you have measured it; and once you measure it, you must have used some kind of equipment, no matter how weak it is, to disturb it; and Once disturbed, the electrons will only exhibit particle properties, and naturally no wave properties will be seen.
It's a bit convoluted, but this is the core of quantum mechanics. It involves many advanced theories such as wave function collapse, uncertainty principle, etc.
Just know the basics and it will be mentioned later. In a word, it is impossible for you to know the specific position of the electron, and it is impossible to know how it passes through the double slit.
That’s right, I don’t know! So it’s wrong to discuss which seam to go through. Planck heard Li Yu mention
"Single photon test", having realized the problem, he continued to say to Li Yu: "Do you know, according to speculation, please pay attention to my wording, it is just a guess. If there is such a thing as a photon, then it is between two There are only two bright spots behind the seam, how can there be an interference pattern?" Li Yu said: "The professor is right, so the premise of my experiment is that light has particle properties." Planck frowned a little , put down the knife and fork in his hand, thought carefully for a while and said: "Are you so sure?" Li Yu said seriously: "Yes!" Planck frowned: "Well, if this is the case, Mr. Newton is in heaven Knowing this will make me happy." After all, Li Yu had worked so hard to come to Europe again, so it was time for him to make some big moves.
This experiment can make Einstein move faster. After all, the explanation of the photoelectric effect truly establishes the particle nature of light.
That is to say, Li Yu is somewhat
"Ahead of the times." Li Yu's previous words were very strict, and the prefix is
"single photon", then
The "double-slit interference test" can be understood as assuming the particle nature of light in advance, and then proceeding from this to confirm its wave nature.
Although it sounds a bit convoluted, it is exactly the wave-particle duality. It may seem like you have come full circle and come back to the starting point, but the process itself is extraordinary.
And Li Yu’s
The "photon" statement is obviously consistent with Planck's quantum theory. Although the single-photon double-slit interference experiment is not a very extraordinary and important experiment, and it does not seem to be of Nobel Prize level, it is very enlightening, especially in the embryonic stage of quantum mechanics.
Li Yu chose this kind of not very
The “terrible” experiment is not bad for the physics community
"mild".
