The speed of light refers to the speed of light propagation. It is also the limit speed currently recognized by scientists, which is 300,000 kilometers per second. Humans have not discovered anything that travels faster than light, so the speed of light is considered the ultimate speed of the universe.

Why is the speed of light 300,000 kilometers per second? How is this number calculated? The first person to propose this concept was Einstein. Strictly speaking, the calculated value of the speed of light is 299792.458 kilometers per second, which is the speed of light propagating in a vacuum.

With the popularization of scientific knowledge, more and more people are beginning to fantasize about the existence of high-dimensional life. These problems all existed in Liu Cixin's science fiction novel "The Three-Body Problem". The science fiction content in the book is very advanced. After reading it, I couldn't help but be surprised that the universe can be so magical.

Such a huge gap makes us not only sigh, but the speed of light is no more than this.

Why is the speed of light only 300,000 kilometers per second?

You must know that since it is the limiting speed in the macroscopic universe, it should be able to keep up with the scale development in the macroscopic world, because according to the environmental limit principle, if a place is that big, there must be a The speed that can quickly reach every corner of this place. It is obvious that the speed of light does not conform to this theory. Is it a problem with the speed of light or a problem with the way we understand it?

Scientists put forward many conjectures about this at that time. On the one hand, they believed that because the expansion speed of the Big Bang exceeded the speed of light, the original environmental limit principle was originally adaptable, but with the expansion speed Accelerating, so the speed of light becomes very unreasonable. However, if you think about this theory carefully, you will still find many loopholes. After all, the universe is expanding, why doesn't its speed keep up? Clearly something is limiting it.

Regarding this doubt, Liu Cixin made a bold conjecture:

That is, the universe had infinite speed at the beginning, and light also had infinite speed. But for some reason, the universe has been being reduced in dimension, so the speed of the universe has slowed down, and the speed of light has also slowed down.

What exactly does dimensionality reduction mean?

Liu Cixin wrote in "The Three-Body Problem": The universe originally had 11 dimensions. In that distant past, the speed of light reached its limit. With the rise of various cosmic civilizations, interstellar wars have begun, and dimensionality reduction attacks have emerged.

Dimensionality reduction attacks cause the dimensions of the universe to fall layer by layer, as if the universe has lost its three-dimensional nature and is developing in a flat direction. Changes in the universe have caused the speed of light to weaken, until it reaches the current 300,000 kilometers per second.

However, what Liu Cixin put forward is just a conjecture and cannot be confirmed. However, the possibility he raised provides a possible direction for future scientific research.

This special concept in "The Three-Body Problem" has been endorsed by many entrepreneurs, such as Xiaomi CEO Lei Jun, and 360's Zhou Hongyi, etc.

This is the feeling that "Three-Body" gives people, and this is also the greatness of "Three-Body". No wonder it won a Hugo Award.

From the introduction of the setting of the three-body civilization, to the laws of the dark forest, to the final act of the jungle, the reader shudders and at the same time realizes his own insignificance.

In the book, readers are brought by Liu Cixin to a brand new world, a magnificent world that has never been created by Chinese characters. In the black hole of the universe, the earth is like an ant, insignificant and precarious. No wonder Obama also lamented that after reading this book, he felt that being president was nothing special!

The plots in the book are intertwined, from suspense to two foreshadowings, to the final big twist, which gives people great impact but also has a certain rationality.

For those who have not read the book "The Three-Body Problem", I strongly recommend you to read it. It will give you a shock of reading and a shock of thinking.

It will enlighten your values ??and outlook on life.

For the price of a meal, all three hardcover volumes of "The Three-Body Problem" will allow you to experience the masterpiece that is closest to your heart in the world.