Update 1: to:? Please visit the "Security Measurement" section of the following website; Zh。 * * */Wiki /LHC, you will understand that the virtual vacuum I asked is n
Update 1: to:? Please visit the "Security Measurement" section of the following website; Zh。 * * */Wiki /LHC, you will understand that the virtual vacuum I asked is not the virtual vacuum you answered. by the way
I know what I am smoking. however
Thank you for your answer.
The following answers are provided by two graduates with master's degrees in physics: A. Thoroughly understand the' virtual vacuum'.
You may need to know about quantum mechanics ... the "expansion theory" in cosmology ... but you can try to answer it simply: in classical physics,' vacuum' means nothing; But after the emergence of the theory of relativity,
We know the mass.
Energy) is interchangeable.
There is not really nothing in a vacuum.
So vacuum is defined as' the physical state with the lowest energy'. In fact, there are subtle and rapid energy fluctuations in a vacuum.
Too fast to be observed.
So we think it's empty .. and the reason why there is energy fluctuation in vacuum.
This can be explained by the "uncertainty principle" in quantum mechanics ... (There is no explanation here) The fluctuation of vacuum energy sometimes leads to the existence of some particles.
Sometimes it disappears. These particles that disappear in the blink of an eye are called "virtual particles" ... some scientists say.
This vacuum is a "virtual vacuum" ... if it is a "real vacuum"
Then it's really nothing.
There are no particles and energy fluctuations ... Besides,
I think people who believe in Yahoo have misunderstood the sentence in * * *
This does not mean that it will eventually become a "virtual vacuum" ... because we are actually in a "virtual vacuum" state ... Wikipedia's sentence should mean
Although this' virtual vacuum' state has been maintained for billions of years.
But not necessarily stable.
There may be other situations ... one possibility is that a "bubble" in a "vacuum" suddenly appeared in the universe.
It will expand at the speed of light.
Finally, the "virtual vacuum" was completely swallowed up ... I think the crisis mentioned in the question.
It should be changed from "virtual vacuum" to "real vacuum" (my translation is very strange ... like the name of potato chips) ... The so-called "vacuum" refers to here.
It is about the meaning of "space" in quantum field theory. The so-called virtual vacuum (English should be false vacuum).
It is a local stable space that is not in the lowest energy state. Think of it as the local minimum state of a potential well. Although this space is locally stable.
But it is not in the lowest energy state. namely
Through the tunneling effect (tunneling effect
Or fancy d, some people call it the instantaneous effect)
The virtual vacuum in this state may suddenly jump to another "true vacuum" with the lowest energy state. the problem is
We live in this world.
In fact, we don't know whether our space is a virtual vacuum or a real vacuum. If we are in a virtual vacuum,
When this virtual vacuum is transformed into a real vacuum,
That new world will have very different physical constants from today. Everything in the universe will be unrecognizable.
Scientists estimate that our common chemical rules will not exist in those new worlds.
Not to mention the form of life. So if this shift really happens,
This will be a disaster. Having said so much.
What does this have to do with the Large Hadron Collider? LHC particles will collide with each other at a very high speed. Some people worry that the powerful energy generated by the collision (although limited to a small range) will lead to the emergence of a "real vacuum" bubble (if our current life is a virtual vacuum).
Then this vacuum bubble will make the whole world jump into a vacuum.
Leading to the demise of civilization. At present, the scientific point of view is that LHC will not pose a threat.
Because we can see the collision of particles with energy as high as 10 1 1 GeV in the universe.
On the other hand, the impact of particles on the ground is only 10 3 GeV. But some people think.
According to the development speed of particle accelerator.
About 2 150.
The impact energy of particle accelerator will reach the level of 10 1 1 GeV. So much for the story. It is worth noting that
Panic because of the doomsday crisis.
This has caused extensive media coverage of the LHC "crisis". It seems that few people care about the research goal and scientific value of LHC itself ... How many reports about LHC mention the standard model? Higgs boson? Grand unified theory? Alas ..... from the discussion forum of Xinghui Point: starrix/bbs/viewthread? tid=28 1。 Extra=page%3D 1 I hope they can answer your questions.
In fact, the word "virtual vacuum" has given the old saying a new meaning. The word "void" comes from the fact that all Buddhism is empty, which is emphasized by Guan Zong in Mahayana Buddhism. The real Dharma is not empty, not empty, not empty, not empty, not empty, but empty. In modern times, the word "vacuum" has been put forward to explain the meaning of Buddhism, which is not empty in concept, but really empty and unexplained, and physicists have been using it all the time. It means that the place where there is no matter in the universe is a vacuum state, and then it is used by ordinary people to refer to the state without air. This is also the most common usage now. But generally speaking, there are still rare substances in the vacuum without air. There is almost nothing in the vacuum in the universe, but there are still one or two hydrogen atoms in every cubic meter (you may need to look it up in the memory). But now physics has a special study on vacuum, which is the area between the nucleus and electrons without matter. This is a real vacuum. What is its essence? You may think that such a small area will have any impact, but for example. If a hydrogen nucleus (a proton) is as big as a watermelon, the electron orbital diameter of the hydrogen atom here is about two kilometers, that is, the space around the ball is deducted by two kilometers, and the watermelon-sized part has nothing or occasionally a few tiny particles passing through it, so the vacuum area is actually much larger than the material area, and the human body is made up of atoms, that is, the human body actually contains a huge vacuum area, which exists in any substance, so it is also very physical. What is a vacuum? How can a vacuum be created in any space with less gas than the atmospheric environment? What is the pressure of discharging air or other gases from a fixed container? Vertical pressure per unit area-standard atmospheric pressure-measured in Torr in semiconductor industry-1ATM = 760 mmhg =14.7 psi = 760 Torr rough vacuum. -coarse vacuum 760 ~ 1 torr-medium vacuum 1 ~ 10-3 torr-high vacuum 10-3 ~ 10-7 torr. 10-7 torr, the advantage of vacuum should be said that the substances (dust and moisture) inside are less than the nominal atmospheric pressure, so it can protect the articles and equipment placed inside from dust and moisture erosion. Vacuum packaging is mainly convenient for storage and does not occupy space. The so-called vacuum means that there is no atmospheric pressure, and the surface pressure is 1 atmospheric pressure. Taking the air away is a vacuum. When the vacuum-packed pillow is opened, it will return to its original state because cotton absorbs air. Cotton wadding is not entangled, and it can be easily recovered by tapping on the periphery. As for sleeping for a long time, it should be irregular extrusion of cotton wool for a long time, and the cotton wool becomes tighter and tighter, resulting in a smaller volume.
Reference: In fact, the word virtual vacuum has given the old saying a new meaning.