A Brief History of Time 1 A Brief History of Time written by Professor stephen hawking was published in 1988, which answered how the universe was born. Where did it come from? Where did you go again? problem The book believes that the universe we live in now has its own historical starting point. It was born about 654.38+0.5 billion years ago. At that time, the universe was just a point, occupying no space and having no concept of time. At this time, the big bang, time and space began to form. At first, the temperature of the universe was extremely high. As time goes on, the space is getting bigger and bigger, and the temperature is getting lower and lower. The energy and matter in the universe are constantly undergoing complex reactions, gradually forming galaxies, and the space is constantly expanding and expanding. To this day, the universe is still expanding. About 5 billion years ago, the sun formed. The earth was formed about 4.6 billion years ago. The universe continues to expand and will expand in the future. After it may expand to a certain extent, the universe begins to shrink, and it may shrink into a point, a point that does not occupy space. By then, time will be over. Whether this will happen is uncertain. What happened before the big bang? I don't know. We will never know. This is the theoretical basis of the Big Bang universe. I think the first half of what Hawking said is right and the second half is wrong. It is right that the universe exploded and the space expanded with time. But the universe will not expand to a certain extent and then start to shrink until it shrinks to a point where it becomes a black hole, and then another big explosion occurs. The universe will keep expanding! I think there are many black holes in the universe. They were the seeds of the Big Bang. These black holes keep absorbing the matter in the universe and expanding until they reach the critical point of the Big Bang. These black holes constantly absorb the matter in the universe, some of which come from other black holes, such as galaxies and so on. That is to say, black holes constantly produce big explosions, and at the same time, black holes are constantly produced due to the polymerization of matter. In this process, matter is communicating. Hawking's theory says that matter is not communicating in this process, which is Hawking's mistake.
Reflection on the brief history of time 2 Hawking initially thought that contraction period was only the time reversal of expansion period. People in contraction will live in a retrogressive way. They will die before they are born and become younger as the universe shrinks.
This is a very interesting argument, because in this case, people can predict tomorrow's world, from old age to ignorance. This is a mysterious state: people can see the broken cups gradually merging together, and they can also see the launched arrows return to the original point. This is against the psychological concept of time. After all, the homework you just finished may be blank the next minute. To tell the truth, even if it is written in science fiction, it is difficult to describe this state and it is impossible to correct the story.
Of course, Hawking later gave up this view, although we are not sure whether the new view is correct. It is precisely because time has a direction that it has infinite expectations for the future. Imagine that time travel in the future can really be carried out, whether from the past to the future or from the future to the past, it will have a great impact: if it is not controlled, the world will surely fall into chaos. Just like the future light cone and the past light cone, the change of a small event may gradually spread to the future and the past. The butterfly effect tells us that this may lead to the collapse of time and space, and sometimes we wonder what the meaning of human existence is. This is the idea I had when I was a child, knowing that human life span is only a few decades, and the earth has experienced billions of years of evolution.
No matter how brilliant the number is, it can only be a flash in the pan. Qin Shihuang can't see the Xi 'an high-speed railway today, and Plato doesn't know the more complicated social relations today. Even Hawking can only stay at 3. 14, and can't hear the church bells tomorrow. When I was a child, I sometimes thought that there would be no one in this world in a few decades, and I even secretly cried, because I didn't think I could see the farther future. Now I still can't figure it out. People's existence is updated too quickly, and they are bound within 36,500 days.
A Brief History of Time is a classic book about cosmology written by Stephen Hawking, a great British physicist and the founder of the black hole theory and the BIGBANG theory. It is a popular science model for popularizing advanced theoretical physics.
"All theories are always temporary: you can never prove it. No matter how many times the results of experiments are consistent with a theory, you can never conclude that the next result will not contradict it. " I came to the conclusion after reading A Brief History of Time. The general meaning of this sentence is that you can never say that all physical theories are true, even if you have guessed them accurately for thousands of times, as long as there is an inappropriate inference next time, then this theory will not hold water.
Like I read Marx's motto on the Internet, I think about everything, in other words, the spirit of doubt. The spirit of doubt is the driving force of human progress. Only in this way can you improve your manners, otherwise the result will only stagnate. I have never thought of this idea before.
After reading this book, there are always many questions in my mind. Is there a big bang in the universe? Is the universe an infinitesimal point? Will it collapse or eventually stabilize? Is the universe boundless or has an end? Can man invent a time machine to go back in time? All the questions are coming.
Hawking once said: "My goal is simple, that is, to complete my understanding of the universe, including why the universe exists." Including Hawking in 2004 also declared that the black hole theory was wrong. He said: "Black holes are not what he and most other physicists thought before.
The universe is mysterious and dark, but there is such a universe in our hearts!
Reflections on a Brief History of Time 4 Time is an abstract concept, despite the fact that we have visualized it. For example, when we mention time, you may think of an alarm clock ticking, or an electronic watch constantly changing numbers, and so on. As for time, I read A Brief History of Time, which is a classic book about cosmology. The author is Stephen Hawking, a great British physicist and the founder of the black hole theory and the "Big Bang" theory. It is a popular science model that popularizes advanced theoretical physics.
"All theories are always temporary: you can never prove it. No matter how many times the results of experiments are consistent with a theory, you can never conclude that the next result will not contradict it. " I came to the conclusion after reading A Brief History of Time. The general meaning of this sentence is that you can never say that all physical theories are true, even if you have guessed them accurately for thousands of times, as long as there are inconsistent inferences next time, then this theory will not be established.
Like I read Marx's motto on the Internet, I think about everything, in other words, the spirit of doubt. The spirit of doubt is the driving force of human progress. Only in this way can civilization progress, otherwise the result it will face will only be stagnation. I have never thought of this idea before.
After reading this book, many questions have been swirling in my mind. Is there a big bang in the universe? Is the universe an infinitesimal point? Will it collapse or eventually stabilize? Is the universe boundless or has an end? Can man invent a time machine to go back in time? All the questions are coming.
Hawking once said: "My goal is simple, that is, to complete my understanding of the universe, including why the universe exists." Including Hawking in 2004 also declared that the black hole theory was wrong. He said: "Black holes are not what he and most other physicists thought before.
The universe is mysterious and dark, but there is such a universe in our hearts!
After reading A Brief History of Time, the vast universe and the mysterious earth have been unveiled one by one.
Stephen Hawking, author of A Brief History of Time. He faced difficulties without fear, overcame diseases and worked miracles. He let us know that defects are not obstacles to success. He used his whole life to realize his promise, and he struggled for his favorite subject all his life. We can say that Hawking is the greatest physicist in the 20th century.
Holding this heavy book full of knowledge, I watched it carefully. The first thing you see is a big clock with an oval dial, and the middle of the dial is deeply concave. Endless time should be its representative. I thought this world-famous popular science book would be boring, maybe a little laborious, but now I have to change my mind.
Mr. Hawking turns complex sentences into humorous language, which helps you quickly understand the knowledge and mysteries of the universe.
I deeply remember Mr. Hawking's famous saying that "if a person has no dreams, he will die". Yes, Mr. Hawking has been confined to a wheelchair for many years, but his thoughts are still active. It flew out of the earth, out of the solar system, out of the Milky Way, and even into the depths of the universe billions of light years away.
Mr. Hawking avoids external interference for various reasons and often thinks about the fate of the universe alone in his room. He can make any sacrifice and give up for his dream and career. Isn't the brilliant achievement he enjoys now bought with sweat and hard work?
After reading this book, I broadened my horizons, and now I find that I only have some little knowledge. Let me fall in love with the mysterious universe and feel the charm of science. Science is power. 2 1 century, how will we strengthen our national strength, develop our economy and make China stand firm in the East? The answer is science.
Reflections on a brief history of time 6. The universe is an eternal topic for mankind. From Aristotle's discovery to Ptolemy's model to Copernicus's improvement, it is finally proved that the sun is the center of the solar system. The earth moves around the sun. This truth is the result of how many astronomers and scientists dedicated their lives and persisted in exploration! Their spirit touched us. It is this firmness that has profoundly changed human thinking and made modern science have a deeper understanding of the universe.
Zong Baihua once said: "The universe is an endless life and a rich motive force, but it is also a strict order and complete harmony." When we look up at the sky, do we really see the secrets of the universe? While we are questioning, a brief history of time gives us the answer.
A Brief History of Time has become a milestone in scientific works. The author's charming and vivid expression, with the most authoritative language and the most accurate data, makes the awesome topic of the universe clearer.
Time has gradually made these profound truths understood by people. Kurd Godel discovered a new solution to Einstein's equation, which enabled the laws of physics to predict time travel. Later, scientists discovered superluminal time travel.
This means that you can travel in reverse time. You can go back to 2008. If you travel too fast, you can even buy tickets to watch the football match before the Beijing Olympic Games.
The summary of these truths is attributed to Hawking. Although 2/kloc-0 was ill, he never gave up and expressed his views in a wheelchair. His struggle surprised us and praised us. He proved the meaning and value of life with his actions, and also made him known as one of the most outstanding physicists after Einstein.
A person is not discouraged by the bad environment, keeps working hard and finally finds his own value. Life is beautiful, we should cherish it and be a strong and brave person.
We explore and discover the universe. I believe that as long as we use our eyes that are good at discovering, we will certainly find happiness that cannot be described in words!
After reading A Brief History of Time, the origin of the universe is really wonderful. As the Tao Te Ching said, it can be described as "mysterious and mysterious, the door to all wonders". Both singularity theory and inflation theory try to explain how the Big Bang and the universe developed after it from the perspective of observed phenomena. Of course, some people will choose the theory that the universe has developed so much because of our existence.
All kinds of theories can explain some phenomena, but they still can't give the most accurate explanation for the origin of the universe, so it seems not a joke to have a creator turn BIGBANG's gear. After BIGBANG 1 s, the temperature dropped to about 1000 billion degrees, which is about 1000 times the temperature of the sun's center, that is, the temperature reached by the hydrogen bomb explosion. This is the first time to know that hydrogen bomb explosion can reach such a temperature. The melting point of iron is only 1500 degrees Celsius, and the material with the highest melting point is only 3990 degrees Celsius. /kloc-0.000 billion degrees is really an unimaginable and indescribable temperature for human beings-you can't even find any words to describe it. But now I know that humans have been able to build weapons with explosion temperatures as high as1000 billion degrees, and I can't think of anything to stop the hydrogen bomb from exploding at close range. Think about it. Humans are still fragile. Everything can take away a person's life, from the trouble of disease to the attack of weapons.
But in a sense, human beings are also powerful. They can make weapons to destroy the earth, and they can also see galaxies light years away. A Brief History of Time not only brought me thinking in the physical sense, but also inspired me in life. Wisdom, an intangible existence, can also be embodied in several chromosomes, which has experienced the evolution from particles to life for 3 billion years. I believe there will be transgenic people in the future, but I don't know if humans will rush out of the solar system by then.
At present, the debate about the origin of the universe is constant. Maybe in a few centuries, man can make a universe by himself-as simple as blowing bubbles. Author: Li Mingzhe
A Brief History of Time was written by Stephen Hawking, a great British physicist, the founder of black hole theory and BIGBANG. This book makes a systematic and comprehensive understanding of cosmology thoughts and theories, and integrates a large number of background materials and theoretical data. This book takes us to distant galaxies, wonderful black holes and incomparably vast universes.
Among them, the famous general relativity in the book attracts my attention the most. The universe used to be small, and then space would expand and a series of big explosions would happen. How amazing! The universe will slowly expand, resulting in many familiar planets such as the earth, the sun, mercury and Saturn. General relativity itself cannot explain these characteristics, nor can it answer these questions, because it predicts that the universe will start from infinite density at the singularity of the Big Bang. General relativity and all other laws of physics fail at singularities: one cannot predict what will happen at singularities.
Isn't it amazing? Unexpectedly, there is such a mystery in the universe that we often talk about. These strange laws of physics came to me after reading this book A Brief History of Time. However, fate will never be perfect. Hawking, a physicist with such high wisdom, suffered from a terrible disease-Luger's disease. People with this disease will be paralyzed and die. However, I was surprised by Mr. Hawking's reaction to the diagnosis. Instead of giving in to the disease, he fought it tenaciously and never gave up easily. This spirit of Mr. Hawking is worth learning!
The theory in A Brief History of Time is so fantastic that people can't help exploring it. Unfortunately, at my present age, I can't fully absorb the knowledge in a brief history of time. I hope that after several years, I will hold this "A Brief History of Time" again, so that I can fully understand it and understand it.
Hawking's A Brief History of Time contains a wonderful view of the universe, which is enough to open our eyes. It contains a lot of academic research of Hawking's life. We also know how hard Hawking's life is, but he has a tenacious struggle. This research report has benefited us a lot!
Comments on A Brief History of Time 9 A Brief History of Time is the masterpiece of the famous physicist Stephen Hawking. When this book was first published, it remained on the bestseller list of The New York Times for 147 weeks in a row, and on the bestseller list of The Times for a record 237 weeks, becoming the best-selling popular science book in history. This book has sold more than10 million copies for more than 20 years, and it should be impossible to count it by now.
However, it is one thing to buy a book, one thing to buy and read it, and another thing to read it after reading it. Although Hawking has written in plain language as much as possible, many people still say that it burns brain cells too much. Someone asked me, so I tried to stroke Hawking's book again to make it easier to understand.
Throughout the ages, human beings have been trying to understand the universe in which we live. A long time ago, some people thought that the universe was a tower carried by a turtle. Some people think that elephants carry the universe, not turtles. But as people began to observe the universe with the help of telescopes and other tools, they were no longer satisfied with explaining the world with fairy tales, but put forward some early models of the universe. For example, Aristotle thinks that the earth is the center of the universe and other planets revolve around it. But then Copernicus discovered that we were actually going around the sun, and then scientists realized that the universe was crazy. It kept moving and all kinds of celestial bodies were moving.
In modern times, astronomers used more comprehensive and detailed observation data to propose a more accurate model of the universe. However, no matter how beautiful these models are, from the perspective of modern physics, we can only describe a tiny space in this boundless universe by relying on these observations, and many deeper and more complicated questions can't be answered, such as what is the universe? What will he become? So, how can we understand the universe more comprehensively? The answer is by calculation. In this book, Hawking described the known universe to us, and introduced its structure, origin, development and ultimate fate.
After reading A Brief History of Time, there are too many puzzles in the vast universe. They attract us as firmly as magnets, making us very eager but difficult to explore these mysteries. In this way, an ideological giant appeared, and he was Stephen Hawking. This holiday, I was lucky enough to read his book A Brief History of Time.
When I opened the book, it immediately attracted me deeply. When describing theories such as "Relativity" and "Curved Space", the author uses precise words, is simple and humorous, and does not give people a boring feeling at all.
What's more exciting is that there are many beautiful illustrations in the book to help us understand it. It is also accompanied by the author's bold speculation and speculation about the future universe. Beautiful words seem to put us in the universe again, witnessing the birth and destruction of the Big Bang and the stars ... As the saying goes, "It is better to read for ten years than to listen to a gentleman's words", but I found that after reading A Brief History of Time, the knowledge and essence in the book are better than reading for ten years.
Let's start with Stephen Hawking, the author of this book. The giant in the wheelchair belongs to Hawking. He was confined to a wheelchair for more than 40 years because of "gradually freezing people", but he overcame his physical defects and became an international "superstar". He can't write or even speak, but he transcends the theories of "Big Bang", "Relativity" and "Quantum Science" and enters the vast universe. Although he was so helpless in a wheelchair, his thoughts crossed the earth and flew to the universe.
John milton was right: the mind is his home, where he created heaven and hell. Let's remember a brief history for a period of time, which will be of great help to our life and we will benefit a lot.
Reflections on Reading A Brief History of Time 1 1 During the summer vacation, I finished reading A Brief History of Time and learned a lot from it.
A Brief History of Time was written by the great British scientist Stephen Hawking. Since the first edition of 1988, it has been translated into more than 40 languages, with a sales volume of nearly100000 copies, which has become a milestone of global scientific works and a miracle in the history of international publishing. Mainly talking about the core content of "time". Hawking explained the ultimate law of the universe with clear and wise language, including the essence of time and space, the role of "God" in creating the world and a systematic and comprehensive explanation of cosmology thoughts and theories. Based on a large number of background materials and theoretical data, this paper tries to decompose the obscure and unclear physical knowledge points in the original work, and expounds Hawking's amazing views more intuitively and vividly with a large number of photos, schematic diagrams and analysis diagrams, which provides a shortcut for readers to better understand Hawking's theory.
The whole book leads us to explore the strangeness between the micro-world and the macro-world, explain profound theoretical physics in simple terms, from tiny elementary particles to distant galaxies and mysterious black holes, tell about the expansion and uncertainty of quarks, antimatter and the universe, and focus on the end of time, time travel and the grand unified theory. Finally, it shows us a wonderful realm. Particles move in eleven dimensions, the black hole finally evaporates and dies with the secrets it carries, and we are just a small nut created by the universe. ...
Hawking has taken us to the distant future, and there are still many unsolved mysteries waiting for us to explore. We should study hard, unveil the veil of the vast universe, benefit mankind and win glory for our motherland!
Reflections on A Brief History of Time 12 This semester, I was lucky enough to read Hawking's A Brief History of Time, and made an authoritative summary of the essence of time and the origin of the universe. Although many contents are only assumptions, this is a hypothesis that can be boldly put forward only with certain scientific basis. Hawking's theory and conception became a milestone in the field of science.
Although there are not many pages in this book, I managed to finish it with great difficulty. In the process of reading, many questions have been lingering in my mind: Is there a big bang in the universe? Was the universe ever an infinitesimal point? Is the universe infinite or has an end? Can humans really invent a time machine to go back to the past or the future? What is the farthest place in the universe that humans can reach? What exactly is a black hole like? What is the smallest part of matter?
Maybe someone can give a satisfactory answer now, but who knows, your answer may only be recognized by people in that situation at that time. With the development of science and technology and the progress of mankind, more people will come forward to tell you that this is not the case. Maybe the way we look at the universe now is the frog's perspective. A few years later, we found that the original universe was not as imagined. At this time, you may think: What is the truth? No one can give you a satisfactory answer, everything should be given to time.
This book needs more than one mountain of knowledge to fully understand. And I just have some feelings after reading it. Humans are so small and powerless in the vast universe, galaxies and huge history. The ancients had a poem: "Flying in the sky is a drop in the ocean". In the face of the infinity of the universe and the poverty of individual life, the ancients are still like this. Why bother about some trivial things?
Today, we explore the universe, in the final analysis, nothing more than realizing our unique significance as individuals in the vast universe through miracles and ordinary events. Let us make unremitting efforts towards the truth in our thinking, which may be endless, but we still remember that time and space are endless and life is endless.
After reading a brief history of time 13 this holiday, my mother gave me a new year gift. This is a book. When I opened it, I was fascinated by it. When I read this book, it seemed that I was in another world, and my heart was suddenly enlightened. Its charm attracts me as tightly as gravity, and I am very happy to read it. This is a Brief History of Time written by Stephen Hawking, a world-famous great scientist.
A Brief History of Time is a very profound book. This is a book on physics. In this book, Hawking leads us to explore the strange field of outer space, introducing distant galaxies, black holes, quarks, "tasteful" particles and "rotating" particles, antimatter and "arrow of time" in a simple way, and expounding ancient problems such as what the universe looks like, time and space, relativity and so on.
After reading the book A Brief History of Time, I benefited a lot, which can be compared with erudition. I know what a BIGBANG is, what a black hole is, how a black hole comes into being, whether stars will die, whether the universe will be destroyed, and how the universe was born. Before reading this book, I always thought that black holes are visible, stars will not die, the sun is the center of the universe, and the universe will not be destroyed. After reading this book, I realized that everything I thought was wrong. After reading this book, I have a correct understanding of the universe. So "A Brief History of Time" gave me great inspiration and made me learn a lot of knowledge.
A Brief History of Time is a very good book. I like it very much. It leads me to the heaven of physics and is the golden key to open the hall of science for me.
After reading A Brief History of Time, is 14 faster than light? Yes, it is the speed of thinking.
This is a term I made up. In the morning, through the huge billboard outside the window, my thoughts can penetrate to the edge of the universe. No, according to the latest theory, the universe has no boundaries and is expanding. Thinking can be expanded accordingly. No one can prove that what you think is right or wrong. That perfect imagination belongs to only one person-yourself.
So happy. Time is meaningless until there is time. Time is an hourglass, which has been used to summarize and diverge since the birth of the universe.
If a great history is only recorded by time, it will eventually be lost. There is too much swelling gravel hidden in time. You are a grain, so am I.
Around a big bend, I lost my desire to tell. Desire is endless. If you are too tired, you will die. This truth is similar to the birth of the theory of relativity and the survival of life.
Einstein's era coincides with the rise of Buddhism in the south. In Buddhism, he can be summarized as "letting go of obsession and making a positive result." This is because: a classic experiment, that is, different observers move in the opposite direction to light and the vertical direction to light on the earth, and the measured light speed is the same. Countless people were immediately deceived. If the speed is equal to the distance divided by the time, then the time measured by relative motion and vertical motion is undoubtedly different. Relative motion will inevitably increase the relative speed, thus reducing the time. Countless people can't get out of this circle. Einstein said loudly: Please don't use distance to push back time, please use time to calculate distance.
Such a gorgeous turn is really imminent. On the edge of the cliff, there is no road. What should I do? What should I do? I thought about it for a long time, but I still stayed put. Turn around.
Great wisdom in the world, if not.
Comments on a Brief History of Time 15 Last Sunday, because Teacher Han asked us to read another math story book in the summer vacation, I dragged my father to Shanghai Bookstore and bought me a book. I think: my father, who has always loved mathematics and likes reading, will definitely choose a suitable book for me. Sure enough, my father immediately picked out a book he liked-A Brief History of Time.
This Brief History of Time was written by the famous Stephen Hawking. When my father told me that he was regarded as the most outstanding theoretical physicist since Einstein, I was really shocked. I weighed the book with my hand. Although it is very light (only 100 pages), I think the knowledge contained in it must far exceed this weight.
Since the title is A Brief History of Time, everything written in the book is naturally related to time. In order to explain time, the author starts with the universe, then talks about space, then talks about black holes, then talks about wormholes, and finally draws a conclusion. The language in the book is full of knowledge and professionalism, which makes me feel very confused. Even so, I seem to know the time. If I talk about time in combination with the words in the book, I will say: time can indeed be material, because everything is material. If time is not material, it will lose its meaning of existence, but obviously, it is extremely important to us, and we can't live without time. Summarize time with an abstruse classic sentence in the book: Time may be immortal, at least in our short-lived material eyes, it is indeed immortal. It produces a point in a specific time and space, so countless points are connected together, become lines, become surfaces, and weave indefinitely until the end of the universe. If the universe is not over, it will continue to weave forever to make the shroud of the creator of the universe.
I don't think this book suits me. After all, I haven't studied physics, and I don't know everything in the book, but I know this is a very important book for us humans. I thought: When I grow up, I will read this book again, and then I can master the knowledge mentioned in the book.