It has been hundreds of years since mankind entered the era of science and technology. The last century ushered in a period of rapid development of science and technology. Many great scientific theories were put forward in the last century. In the 21st century, although the basic theory of mankind has not made any progress, science and technology have achieved a huge leap.
The reason for this is that we have made a huge leap in our understanding of the various basic theories put forward by the great scientists of the last century, and thus applied the basic theories to practice and developed many applied technologies. The predecessors planted trees and the descendants took advantage of the shade. The great scientists of the last century put forward various basic theories, and in the 21st century, we have enjoyed the tremendous benefits brought by these basic theories.
Although the scientific theory of mankind has been greatly improved, we must understand that human civilization is still a low-level civilization in the cosmic civilization. According to the classification standard of cosmic civilization proposed by scientists, human beings can only be regarded as a 0.7 level civilization at most, not even the lowest level one civilization.
Therefore, many sciences are still unknown to us, and it is difficult for scientists to decipher them. There are three scientific mysteries that are difficult for humans to crack, each of which makes scientists feel helpless.
1. The mystery of the origin of the universe
How did our universe come from? We must know that when we walk out of the earth and see the vastness, we cannot be amazed at the magic of the universe. While lamenting the mystery of the universe, we are also thinking: How did the universe come from? Scientists have put forward the theory of the Big Bang through a large number of observations and studies, and believe that our universe originated from a singularity big bang 13.8 billion years ago.
Although the Big Bang theory has become the current mainstream view of the origin of the universe, there are still many mysteries that are difficult to explain. According to the Big Bang theory, the universe was initially just a space-time singularity with an infinite density and extremely high temperature. After the explosion of this space-time singularity, it expanded at an unimaginable speed, and finally evolved into the splendid universe we currently see.
The origin of the universe has been explained, but a new question has arisen, that is, how did this singularity of density and temperature reach its extremes? Is it something out of nothing? Obviously, from a scientific perspective, it is impossible for something like this to happen out of nothing. Since the universe originated from a time-space singularity, then this mysterious singularity must have a source, so how did it come from?
In this regard, some scientists have proposed a conjecture that the universe has reincarnation. After the last universe has reached its end, it collapses into an energy cluster with the highest density and temperature. This energy cluster is a singularity. When the energy was compressed to the extreme, an explosion occurred, and then a new universe was born.
If this conjecture is correct, is the universe in an infinite cycle of expansion, collapse, expansion, and collapse? It is estimated that this result is unacceptable for many people. As for the origin of the singularity, some people have put forward a bolder conjecture, that is, the mysterious truth from outside the universe.
I believe my friends have heard of multiverse theory, and it is a conjecture put forward by scientists. This conjecture believes that there are more vast facts beyond the universe, there are countless parallel universes, our universe is just one of them. It is possible that there are many such time-space singularities in this universe, and they will explode under certain circumstances, and then a new universe will be born.
2. The weird quantum mechanics
After mankind entered the era of science and technology, in addition to having a new understanding of the macro world, we also initially realized the micro world behind the macro world. The science of exploring the microcosm is called quantum mechanics. In the eyes of many people, macroscopic matter is composed of microscopic particles, and the two are closely related, so the scientific laws of the macroscopic world should also be applied to quantum mechanics.
However, scientists have discovered through a lot of research and exploration that in quantum mechanics, quantum probability and randomness are the mainstream. This kind of randomness makes scientists feel really speechless. If things are random, then the laws of human physics in the macroscopic world are It is difficult to adapt to quantum mechanics.
In the quantum world, you will also find even more weird and magical phenomena. For example, quantum entanglement tells us that two particles in a system, one of them has changed, and the other will change synchronously. And this synchronization will not be delayed due to distance and ultimate, even if they are in two different galaxies, they can also be synchronized in real time.
Quantum entanglement is not a phenomenon that makes us feel weird. Another example is the photon in the gap between atoms in the form of waves. The state before and after the observation is different. When someone observes, the photon will re-enter the gap in the form of a particle. In passing, the characteristics of the wave are instantly lost. When no one observes, the photon will take on the form of waves and particles. This result makes scientists very puzzled.
In quantum mechanics, what makes scientists most strange is the quantum superposition state, which is the opposite thing that cannot exist at the same time in the macroscopic world, but can exist at the same time in the quantum world. According to the normal logic of our human beings, everything has a sequential relationship and a causal relationship. For example, when we are hungry, we will look for food. When a person is alive, the state of death will not appear. When we stand on the left You can’t stand on the right when you are.
This sequence and causality in the macro world is a very normal scientific theory. But in the quantum world, there is no so-called smoothness, and there is no causal relationship. There can be an effect and then a cause, or cause and effect can exist at the same time. For example, the states of life and death can exist at the same time in the quantum world. Does this result make us feel very strange? This is where quantum mechanics attracts scientists.
3. What is consciousness?
Human beings rely on wisdom to become the masters of the earth, so what is the core of human wisdom? Could it be those visible material components in the brain? We thought so in the past, but with the continuous advancement of human science and technology, scientists discovered the existence of consciousness, and only then knew that the reason why human beings call it intelligent life is mainly because we have a mysterious consciousness.
Consciousness is something invisible and intangible. It is like dark matter. We can recognize that they exist through some phenomena. But can’t really figure out what they are? Some scientists associate human consciousness with the soul of ancient legends, and believe that the two should be the same thing.
The soul has many legends in the human world. If consciousness is the soul, will these legends about the soul also be true? Although scientists are eager to know the answer, we are still at a loss for things that are invisible and intangible, and we can’t figure out the nature of consciousness through experiments.
The above three scientific mysteries that make scientists feel helpless, each of them is very important to mankind. It can be said that as long as we crack one, human civilization will achieve a qualitative leap. When all three are completely cracked, perhaps human beings will become the advanced civilization of the universe. This shows how difficult it is to solve these three mysteries. If you want to really solve them, you can only develop technology quickly and keep working hard. I believe that one day, their mystery will be unveiled by us.