What kind of book is A Brief History of Time?

I will provide you with a very authoritative science**: Sansi Science Network.

The specific content of "A Brief History of Time" can be summarized into the following levels:

1 Time start and end point - the start point of the cosmic explosion. The universe is constantly expanding, and it should be closed to one point at the beginning, and this moment is called the cosmic explosion moment. The relative density of the universe here is infinite, which is what math class refers to as singularity.

2 End of Time – Black Hole. Planets will continue to converge due to their attraction effects, creating a "black hole". The outermost attraction of the black hole is very strong, and it stops here when the hand is missing.

3 How did the Creator start the universe? - The origin and fortune of the universe. One is the origin of the universe called the initial conditions of chaos, expressed in terms of the principle of anthropic; Another way of saying it is called the "Crazy Inflation Entity Model", which argues that the universe is surging at an instantaneous speed in a gradual instant, and that the radius of the universe expands by about 100 trillion trillion trillion times in well under one second.

4 The Unity of Physics—The Final Fundamental Theory. People are looking for a detailed, coherent and unified basic theory that applies to every implicit thing in the universe, where there is no need to choose special parameters to conform to the facts.

Einstein's theory of general relativity is generally considered to be the appropriate basic theory to describe the evolution of the universe. In the framework of classical general relativity, Hawking and Penrose confirmed that there must be singularities in space and time by very general standards, and the most well-known singularity is the singularity in a black hole and the singularity at the cosmic explosion. At the singularity, all the fundamental laws and their desirability are invalid.

The singularity can be used as an edge or boundary in space and time. Only when the initial conditions at the singularity are given can the evolution of the universe be obtained from Einstein's equations. Because the initial conditions are only given by the Creator outside the universe, the fortunes of the universe are in the hands of the Creator.

This is the problem that has puzzled the first impetus for people's intelligence since the time of Copernicus.

If there were no boundaries in space and time, then there would be no need to work for the Creator to carry out the first promotion. This can only be guaranteed in the theory of quantum gravity. Hawking felt that the quantum state of the universe was in an excited state, and space and time could be regarded as a relatively finite and unbounded four-dimensional plane, just like the outermost part of the earth, but with two more dimensions.

The entire structure of the universe can be attributed to the minimum fluctuations allowed by the uncertainty principle of physics. From some simple solid model calculations, we can get reasoning consistent with astronomical observations, such as the clumping structure of galaxies and planets, the anisotropy and symmetry of super-large scales, and the flatness of space and time, that is, space and time are mostly flat, and thus the development trend of galaxies and even life becomes very likely, and there are also indicators of time.

The practical significance of Stephen Hawking's quantum technology cosmology depends on the fact that it really makes cosmology a perfect scientific science, and it is a basic theory on which everyone can speculate about everything in the universe under normal circumstances.

A Brief History of Time is very well written, so I like it very much. I think it's concise and well-written, and I think it's very well written.

I love the book A Brief History of Time. The book "A Brief History of Time" is very well written, and it is a very interesting book for the year old oak book in which Hawking's first exploration of the theory of the universe is written.

I still like it very much, Shen Xun's chain of filial piety is still very wonderful, and it is of a high philosophical nature. This book is still very well written, and the thinking about some things in it is also very comprehensive. Shed.

I really like this book, because the plot in it is really infectious, and it will be liked by many people.

I remember the first book I read that broke through the perception was A Brief History of Time. I was a primary school student at the time, and I was fascinated by the imagination and language in the book, although I didn't fully understand all the concepts and theories in the book. This book opened my mind to the universe and time, and it became my first step in understanding the world.

The book mentions some esoteric physics principles from big ** to black holes, the relativity of time and space, etc., but the author Stephen Hawking was able to connect these knowledge involving advanced physical concepts in plain language with small stories, so that I could understand these complex concepts. Hawking also used this book to show us his thoughts on the universe and the special theory of relativity, which also made me re-examine the relationship between man and the universe.

In the book, Hawking insists on looking at human history and human civilization from a scientific perspective: starting from the principles of physics, the origin and nature of the universe, so as to demonstrate the guiding role of science in our understanding of the world. It is this scientific method that has led to a shift in my perception of the world in a more standardized direction.

Hawking wrote a number of summaries that summarized the content of each subsection and made it possible for them to fit together. In these discussions, Hawking shares with us some of his imaginations of the universe, and he uses some very mysterious and surprising methods to derive some conclusions from physics.

For example, if you pick a random point in the universe and cover it, you will find that there will be a lot of tiny matter in this place, and this matter will gradually approach and converge into a large galaxy. This is a fundamental evolutionary process in the universe and is further discussed in later chapters.

Through the book A Brief History of Time, I began to be inspired to think differently and challenge my own preconceived notions. I became more and more aware of the limitations of my knowledge and experience and the need for extensive study and exploration. Now, I think we have to solve a series of important problems with better and purer capabilities.

This will also be the starting point for us to comprehensively challenge the limits of cognition.

All in all, "A Brief History of Time" is a very good and meaningful book, which brings us a variety of elements such as popular science and philosophy, so that readers can expand their horizons while thinking. I showed how I was able to push the limits of my cognition and gain some important knowledge of philosophy and physics by reading books when I was in a stage of ignorance. This book also inspired me to understand the colorful world I still need, and also made me understand how important the thirst for new knowledge is on the road to cognition.

On the road of our knowledge and cognition, we need to face new challenges with a positive attitude, constantly expand the boundaries of our horizons and thinking, and constantly break through the limits of cognition. Only in this kind of exploration can we face the torrent of scientific thinking and go further and further in cognition.