Why can t the double slit experiment be observed?

Quantum mechanics. The essence is that there is no result without observation. Quantum states.

is a description of a probabilistic state, while observation makes a probabilistic event.

Becoming a definite event also changes the quantum state itself.

The essence of measurement is to obtain information about that particle by means of its interaction with any other medium.

Interference in the double slit.

In the experiment, the measurement resulted in the disappearance and collapse of the streaks.

In fact, it is a post-selection process, and after the measurement, the electrons corresponding to the two paths are taken out separately for statistics, and the results are different from those when the statistics are done together. This measurement doesn't change cause and effect, it's just that you get more information and can statistically analyze the results in different ways.

Introduction

Use a double-slit experiment.

This method has become a classic thought experiment because it clarifies the core puzzle of quantum mechanics and demonstrates the inevitable fundamental limits of theoretical ability to experimental results.

For example, if the design of the double-slit experiment is slightly changed, and a detector is installed behind the slit to detect which slit the photons pass through, the interference pattern will disappear completely, and the interference pattern can no longer be observed; The substitution shows the simple sum of two single-slit patterns. This counter-intuitive yet easy-to-make result is very perplexing for physicists.

The above content refers to: Encyclopedia - Double Slit Experiment.

Why is the double-slit experiment scary? Is the world you see real?

The double-slit experiment cannot be observed because when the observer appears, the interference of the light particles disappears and then becomes two stripes. As if these light particles do not like the attention of others, they appear when they see them, and they do not appear when they are not, which cannot but make people feel terrible suspicions.

The double-slit experiment is an experiment that demonstrates the wave and particle properties of microscopic objects such as photons or electrons, and the double-slit experiment is a "two-path experiment". In this more general experiment, a microscopic object can travel from the initial point to the final point through two paths at the same time, or through either of them. The difference between these two paths leads to a phase shift that describes the physical behavior of microscopic objects, and thus the phenomenon of interference.

Because the results of the double-slit experiment are completely beyond people's usual understanding. The results of the double-slit experiment have made people more or less doubt about the reality of this world. If we don't observe, will many people and things other than those we can observe ourselves?

When we observe someone, that person becomes real, his or her past and present are determined, and when we stop observing this person, then he or she is back in the form of a wave function.

To put it simply, there is a pair of photons A and B in a quantum entangled state, one researcher uses photon B for experiments, and the other researcher "secretly" observes the state of photon B through photon A. Due to the over-distance effect of quantum entanglement, researchers can observe photons used for experiments without knowing it.

Seeing this, we have to admire the brains of relevant researchers who can come up with such a method. In fact, however, the results of this experiment are still the same as before: when there is an observer, there are no interference fringes at all, and when there is no observer, interference fringes appear strangely.

The results of the double-slit experiments are the same, that is, the microscopic particles are like thoughtful, omniscient sprites, and when there is no observer, they are wave functions, and when they know that someone is observing them, they immediately exhibit only particles, and never exceptions.

I think tiny particles can emit light waves, then they will affect each other, in the macro and micro, he is a particle is also a wave, we don't observe him, the wave band particles form interference, to observe that he will inevitably have mirror reflection to cancel the wave, and finally only the particle phenomenon remains.

I feel that this experiment has opened up a new understanding, which is a field that is unknown to humans, and I feel that it reminds us of the direction of exploration, and realizes that there is still a lot that humans do not know.

Hope my answer will be helpful to you, thanks.

If it weren't for fooling people, then this phenomenon suddenly turned the materialistic world into an idealistic world, and you said it wasn't terrible.

Because it's a result that goes against human thinking, it's like the American drama Westworld.

Because the world may have been made. It could just be a computer program or something.

Just a bug written by a programmer

The reasons for not being able to do a double-slit interference experiment may be:

1. The light source cannot be a flashlight, it must be a coherent light belt mountain, such as a laser. The flashlight is incoherent light, and it is absolutely not resistant to double-slit interference. You can try buying a laser pointer to irradiate.

2. Secondly, the double seam should be smaller, not too large, and the seam width should be at least 1mm, so that clear interference stripes can be seen.

Unsuccessful principle extension: parallel monochromatic light is projected onto a baffle with two slits, the slits are very close to each other, and the light waves of the parallel light will be transmitted to the slit at the same time, and they become two wave sources with the same vibration situation called coherent wave sources, and the light emitted by them is superimposed on each other in the space behind the baffle trace, and the interference phenomenon occurs.

In the Young's double-slit interference experiment, when the light source moves upwards and downwards, the interference fringes move downward and upward (the direction of movement is opposite to that of the former).

The interference must first coherent light bypass the obstacle (in fact, diffraction) and then superimpose on each other, forming a streak of light and dark.

The double slit is vertical, horizontal, small in size, easy to bypass the light (diffraction), located on the left and right sides; Each seam, while the size of the vertical direction, is not easy for the light to go through, so there is no light up and down. Eventually, the light on the left and right sides of each vertical slit is superimposed on each other, forming light and dark stripes, of a nature and parallel seams.