chapter 4.
时间旅行
根据平行宇宙论，宇宙外面有不计其数个宇宙。并且每个宇宙都完全一样。也就是说在那些宇宙里也有我们，也有你问问题，也有我在回答，就像镜子一样，区别就是时间不同。也许在那个宇宙里你还在上小学，也许在另一个宇宙里我们已经飞出太阳系。但在到那个时间段后，我们却会做相同的事情。而想要到达平行宇宙，最可能的就是以光速旅行。但这目前对人类来说还不可能。因为这可能要用掉地球上所有的资源与能量。
快速恒星际或星系际旅行是一个密切相关的问题，也是科学幻想作家所关心的。根据相对论，没有东西比光运动得更快。因此，如果我们向我们最近邻的恒星α-半人马座——发送空间飞船，由于它大约在4光年那么远，所以我们预料至少要8年才能等到旅行者们回来报告他们的发现。如果要去银河系中心探险，至少要10万年才能返回。相对论确实给了我们一些宽慰。
因为时间不存在惟一的标准，而每一位观察者都拥有他自己的时间。这种时间是用他携带的时钟来测量的，这样航程对于空间旅行者比对于留在地球上的人显得更短暂是可能的。但是，这对于那些只老了几岁的回程的空间旅行者，并没有什么值得高兴的，因为他发现留在地球上的亲友们已经死去几千年了。这样，科学幻想作家为了使人们对他们的故事有兴趣，必须设想有朝一日我们能运动得比光还快。大部分这些作家似乎未意识到的是，如果你能运动得比光还快，则相对论意味着，你能向时间的过去运动，正如以下五行打油诗所描写的那样：
有位年轻小姐名怀特，
她能行走得比光还快。
她以相对性的方式，
在当天刚刚出发，
却已在前晚到达。
last word
不管人类至今对宇宙了解了多少，但我们至少可以知道宇宙其实并不是我们想像的那么简单。首先，因为它的诞生已经决定了它是有大小的，再加上科学家发现的红移以及宇宙微波背景辐射在不断减弱，更能证明宇宙在不断膨胀。但是目前我们还不知道宇宙大爆炸波及到的范围。第二，宇宙中的空间存在第3维或第4维，使地球人所无法想象的。而这又产生了平行宇宙的理论。其三，根据平行宇宙，我们有可以在理论上建造出虫洞，它提供了两个宇宙间最短的距离。第四，有了虫洞，就说明时空可以被拉伸、压缩、撕裂，也就推导出了时空旅行这个想法。虽然这一系列理论对于目前的人类来说还只能是一种假说，还有待我们遥远的子孙去证明或推翻，但科学的历史就是纠错的历史，就像爱因斯坦推翻了牛顿当时统治世界的静态宇宙的思想，提出了时间也是空间的一维。我们今天，不断地站在前人的肩膀上，自然就会看得更远，又可能提出许多不同的假说。所以，科学的发展史有待我们每一位青少年去开拓、发展。
Chapter 4.
Time travel
Based on parallel universe has countless cosmological outside a universe. And every universe are exactly the same. In the universe is in us, have you ask questions, also have I answer, just like a mirror in the same time, the difference is different. Perhaps you also in the universe in elementary school, maybe in another universe we have flew out the solar system. But at the time, we will do the same thing. But want to parallel universe, most likely to travel light. But it now for humans is not possible. This may be because of using all of earth's resources and energy.
Rapid star event or intergalactic travel is a closely related issues, as science fiction writer concern. According to the theory of relativity, nothing moves faster than light. Therefore, if we to the nearest star - alpha centaurus space shuttle, because it sent in about four light years so far, so we expect at least 8 years to wait travelers report back their findings. If you want to go to the center of the Milky Way galaxy at least 10 years, the expedition to return. Relativity really gave us some relief.
Because of the time don't exist only standard, and each has his own observer. This time is to use his clock to carry on the voyage, such measure space travelers to stay on earth than the one appears more brief is possible. However, for those who just a few years old of the space traveller, and return to nothing, because he found in earth's relatives and friends had died for thousands of years. So, science fiction writer to make people for their stories are interested, must imagine one day we can exercise faster than light. Most of these writers seem not to realize is that if you can exercise faster than light, relativity means you can give the movement, as described below five limerick:
A young lady of white,
She can walk faster than light.
By way of relativity, she
Based on the just,
But in the night has arrived.
Mr. Word
Regardless of human understanding how the universe, but at least we can know the universe is not so simple we imagine. First, because it's already decided it was born there, plus the size of scientists discovered the redshift of the cosmic microwave background radiation and weakening in the universe can prove more inflation. But now we still don't know the big bang spread to the limits. Second, the existence of the universe first three dimensional space, make the fourth dimension, or the people imagine. But it also produces a parallel universe. Thirdly, based on parallel universe, we can build a worm hole in theory, it provides the shortest distance between two universe. Fourth, a worm hole, elucidation space-time can stretch, compression, rent, also is deduced time-travel this idea. Although this series of theory for the current human beings also is only a hypothesis, we go to prove the sons of distant or overthrow, but the history of science is the correction of history, like Einstein overturned Newton was world domination static universe, and puts forward the thoughts of one-dimensional space and time. Today, we continuously, standing on the shoulder, nature will see farther, and may be many different hypothesis. Therefore, the scientific development needs us to exploit, every youth development.
狠，不给分。抠门
Time travel
Based on parallel universe has countless cosmological outside a universe. And every universe are exactly the same. In the universe is in us, have you ask questions, also have I answer, just like a mirror in the same time, the difference is different. Perhaps you also in the universe in elementary school, maybe in another universe we have flew out the solar system. But at the time, we will do the same thing. But want to parallel universe, most likely to travel light. But it now for humans is not possible. This may be because of using all of earth's resources and energy.
Rapid star event or intergalactic travel is a closely related issues, as science fiction writer concern. According to the theory of relativity, nothing moves faster than light. Therefore, if we to the nearest star - alpha centaurus space shuttle, because it sent in about four light years so far, so we expect at least 8 years to wait travelers report back their findings. If you want to go to the center of the Milky Way galaxy at least 10 years, the expedition to return. Relativity really gave us some relief.
Because of the time don't exist only standard, and each has his own observer. This time is to use his clock to carry on the voyage, such measure space travelers to stay on earth than the one appears more brief is possible. However, for those who just a few years old of the space traveller, and return to nothing, because he found in earth's relatives and friends had died for thousands of years. So, science fiction writer to make people for their stories are interested, must imagine one day we can exercise faster than light. Most of these writers seem not to realize is that if you can exercise faster than light, relativity means you can give the movement, as described below five limerick:
A young lady of white,
She can walk faster than light.
By way of relativity, she
Based on the just,
But in the night has arrived.
Mr. Word
Regardless of human understanding how the universe, but at least we can know the universe is not so simple we imagine. First, because it's already decided it was born there, plus the size of scientists discovered the redshift of the cosmic microwave background radiation and weakening in the universe can prove more inflation. But now we still don't know the big bang spread to the limits. Second, the existence of the universe first three dimensional space, make the fourth dimension, or the people imagine. But it also produces a parallel universe. Thirdly, based on parallel universe, we can build a worm hole in theory, it provides the shortest distance between two universe. Fourth, a worm hole, elucidation space-time can stretch, compression, rent, also is deduced time-travel this idea. Although this series of theory for the current human beings also is only a hypothesis, we go to prove the sons of distant or overthrow, but the history of science is the correction of history, like Einstein overturned Newton was world domination static universe, and puts forward the thoughts of one-dimensional space and time. Today, we continuously, standing on the shoulder, nature will see farther, and may be many different hypothesis. Therefore, the scientific development needs us to exploit, every youth development.
狠，不给分。抠门
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第1个回答 2009-06-04
chapter 4.
Time travel
On the basis of parallel universe, the universe outside the universe countless months. And the universe are exactly the same for each. That is also the universe in which we also have the problem you ask, there are as I said in answer, like a mirror, the difference is the different periods of time. Maybe in that universe, you are still in elementary school, perhaps in another universe, we have been flying out of the solar system. However, at that time, we will do the same thing. And want to reach the parallel universe is most likely to travel the speed of light. However, at present it is not possible for humanity. Because it may take off the face of the earth all the resources and energy.
Constant rapid interstellar or inter-galactic travel is a closely related issue, but also science fiction writers are concerned about. According to the theory of relativity that there is nothing faster than light movement. Therefore, if we are to our nearest neighbor star α-Centaur - to send the spacecraft in space, since it about 4 light-years so far, so we expect at least 8 years to wait for travelers to come back to report their discoveries. If you go to the Milky Way Adventure Center, at least 10 years to return. Indeed the theory of relativity gave us some relief.
Time does not exist because the only standard, and every observer has his own time. This time he was carrying with the clock to measure, so that a range of space travelers to stay in than the people on Earth even more short-term is possible. However, this is only for those who return old age of space travel, and there is nothing to be happy, because he found in the relatives and friends of the earth for thousands of years has died. In this way, science fiction writer in order to make people interested in their stories, we must envisage the day when we can campaign faster than light. Most of these writers does not seem to realize is that if you can movement faster than light, then the theory of relativity means that you can to the movement of time, as described by the following limerick as:
A young lady of Wight,
She can do it faster optical surpassed.
Her relative way
Just starting the same day,
Has arrived in the night.
last word
Regardless of human understanding of the universe since the number, but we can at least know that the universe is not as simple as we imagine. First of all, because it has already decided on the birth is the size of it, together with the redshift, as well as scientists have discovered the cosmic microwave background radiation in the continuous decline, but also prove that in the ever-expanding universe. However, we do not know the Big Bang to the extent affected. Secondly, the existence of the universe in the first 3-dimensional space or 4-dimensional, so that people can not imagine the Earth's. This, in turn, produced a parallel universe theory. Third, according to a parallel universe, we are able to build a wormhole, in theory, it provides two of the universe, the shortest distance. Fourth, with the wormhole, it could be that space-time tensile, compression, tearing, it is derived from the idea of space travel. Although this series of theories for the present can only be human is also a hypothesis that remains to be our distant descendants to prove or disprove, but the history of science is the history of forward error correction, just as Einstein was to overthrow the rule of Newton the world the idea of a static universe, the time is one-dimensional space. Today, we constantly standing on the shoulders of our predecessors, will naturally see farther, it might also raise a number of different hypotheses. Therefore, the development of science, the history of each one of our young people to be to explore and develop.
Time travel
On the basis of parallel universe, the universe outside the universe countless months. And the universe are exactly the same for each. That is also the universe in which we also have the problem you ask, there are as I said in answer, like a mirror, the difference is the different periods of time. Maybe in that universe, you are still in elementary school, perhaps in another universe, we have been flying out of the solar system. However, at that time, we will do the same thing. And want to reach the parallel universe is most likely to travel the speed of light. However, at present it is not possible for humanity. Because it may take off the face of the earth all the resources and energy.
Constant rapid interstellar or inter-galactic travel is a closely related issue, but also science fiction writers are concerned about. According to the theory of relativity that there is nothing faster than light movement. Therefore, if we are to our nearest neighbor star α-Centaur - to send the spacecraft in space, since it about 4 light-years so far, so we expect at least 8 years to wait for travelers to come back to report their discoveries. If you go to the Milky Way Adventure Center, at least 10 years to return. Indeed the theory of relativity gave us some relief.
Time does not exist because the only standard, and every observer has his own time. This time he was carrying with the clock to measure, so that a range of space travelers to stay in than the people on Earth even more short-term is possible. However, this is only for those who return old age of space travel, and there is nothing to be happy, because he found in the relatives and friends of the earth for thousands of years has died. In this way, science fiction writer in order to make people interested in their stories, we must envisage the day when we can campaign faster than light. Most of these writers does not seem to realize is that if you can movement faster than light, then the theory of relativity means that you can to the movement of time, as described by the following limerick as:
A young lady of Wight,
She can do it faster optical surpassed.
Her relative way
Just starting the same day,
Has arrived in the night.
last word
Regardless of human understanding of the universe since the number, but we can at least know that the universe is not as simple as we imagine. First of all, because it has already decided on the birth is the size of it, together with the redshift, as well as scientists have discovered the cosmic microwave background radiation in the continuous decline, but also prove that in the ever-expanding universe. However, we do not know the Big Bang to the extent affected. Secondly, the existence of the universe in the first 3-dimensional space or 4-dimensional, so that people can not imagine the Earth's. This, in turn, produced a parallel universe theory. Third, according to a parallel universe, we are able to build a wormhole, in theory, it provides two of the universe, the shortest distance. Fourth, with the wormhole, it could be that space-time tensile, compression, tearing, it is derived from the idea of space travel. Although this series of theories for the present can only be human is also a hypothesis that remains to be our distant descendants to prove or disprove, but the history of science is the history of forward error correction, just as Einstein was to overthrow the rule of Newton the world the idea of a static universe, the time is one-dimensional space. Today, we constantly standing on the shoulders of our predecessors, will naturally see farther, it might also raise a number of different hypotheses. Therefore, the development of science, the history of each one of our young people to be to explore and develop.
