Can double seam interference use tennis experiments?

We know that the smallest particles in nature will show some very strange ways, including photons, electronics, atoms, and even some molecules. Double seam experiments show that they do not show a probability wave when they are not measured. It is very strange that during measurement, these probability waves will collapse and turn into different particles. We also see from the delayed selection of quantum erasers and other experiments that the two particles can be entangled, which means that even if the particles are separated in time and space, they seem to be closely connected by sharing a probability wave in some way.

Scientists have displayed quantum behavior in molecules containing hundreds of atoms. So how much particles can still show quantum behavior? If I throw thousands of tennis into a double seam, when there is a screen in the back to record the position of the screen, will I see the same result as the electron or atom? The answer is of course not.

Tennis is also composed of a large number of atoms. Why is the overall behavior not like a single particle composed of it? To answer this question, we must understand some basic knowledge of quantum mechanics. Let's take a look at how the double seam experiments of light work.

principle

With two slits illuminated monochrome, when the light hit the screen, we will see the interference pattern on the other side. Because with the spread of the waves, the place where the peak meets will be enhanced, and the place where the peak will be offset will be offset. This should not be a big secret, nor is it unique to quantum mechanics. This is just the attribute of waves. Now, if we reduce the intensity of light until our light sources only emit only one photon at a time. For granted, we think this should not create a wave of mode! When we shoot a photon at a time, it forms a point on the screen. But if there are enough photons, we will find that these photons have the same interference patterns together.

Therefore, we want to know what the photon happens at the slit, so put a detector there to determine whether the photon is through slit 1 or through the slit 2. This is the most amazing result of quantum mechanics, because when we try to find out which path of photon goes, the interference pattern disappears! Photon seems to be shown like particles instead of waves. What happened? Let's talk in the language explained by Copenhagen. This is one of the most accepted interpretations of quantum mechanics. It is conceived by Niels Bohr and Verna Hesenburg of Copenhagen University around 1927.

This explanation basically says that these so -called particles are not particles at all. They are in multiple states at the same time, just like a wave of probability. Only when they are measured can the waves become clear like particles. The point of the probability wave becomes different particles is called the "collapse" of the probability wave. Scientists have found that at any time to measure the path information of any particle, its probability wave will collapse. In order to keep the particles a probability wave, their path information must be absolutely confidential. If any type of measurement is performed at any time, the particles will become clear and do not show a wave -like behavior.

In the following years, the same behavior of electronics and atoms even found that as many as 800 atoms. If they measure their path information, the same interference pattern will not be formed, and the same collapse will occur. The measurement always collapses the waveform, and the measurement is the formation of any physical records of the pavement of the particles, which has nothing to do with conscious observers.

explain

Now, if we use very large particles to do this, such as sand particles or tennis, will we see the same mode? of course not. We will only see two lines on the other side of the double slit. Why can't we see the behavior of tennis? The reason is that large objects are almost unlikely to be isolated from the outside world.

In order to isolate tennis, we must make sure that there is no path to tennis in the universe. First, we must remove all air and photons in the experiment. If a photon or air molecule rebounds from tennis, it may record the path of tennis. For example, if the photon is reflected from the ball, then this may be a measurement value, because the path of the photon will change, and the photon's rebound path has recorded the path information of the ball. In the potential place, the universe can check the path of all photons in the room, find out how they are affected by the tennis path, and find out the path of tennis from these information.

We also need to cool this tennis to absolutely zero, because the ball with any temperature will launch a photon because of things called "black radiation". The emitted photon will record information about tennis. The universe will check the photons in the room to determine the path of this tennis. We have to worry about the gravity of tennis, because this gravity of tennis will affect nearby atoms. Theoretically, this allows someone to determine the path of this tennis, and the movement of nearby atoms can also form a record of tennis trajectory.

We must completely isolate tennis, because any information about its path to the universe will create a record. Even if this information is recorded in an atom, it is still the information captured in the universe, which will cause tennis to not superimposed, and it will not be a probability wave. This will be a unique entity. Macro -objects like this are difficult to isolate information, so in our daily experience, we will not see quantum superimposed or wave -like behaviors of macro objects.

But quantum mechanics is suitable for all objects. If we can completely isolate it on information, will tennis perform like an atom?From a mathematical point of view, the wave of the object is described by the Debeli wave function: λ = H/MV.Because Planck's constant is so small, and the quality "M" is so large, the wavelength will be very small.Therefore, the interference pattern is almost like no interference, and the quantum mechanics behavior of tennis converges to classic behavior.Reprinted content only represents the author's point of view

Does not represent the position of the Institute of Physics of the Chinese Academy of Sciences

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Source: Vientiane experience

Edit: Tibetan idiot

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