A strange inventor died his sweetheart in an accident and made a wonderful machine for her to travel to the past in the hope of restoring life by changing the events that led to her death, but he quickly discovers that change of justice and destiny is impossible, this imaginary plot derived from A famous novel has become the subject of several films have always raised in the minds of viewers a puzzling question is can you really travel through time? Scientific theories say yes! Philosophers, Verdon Sakhrin: How do I go back to the distant past and I have not yet created and how to travel to the future and it is not yet? A good response but like most philosophers answers is no more than a complicated puzzle.
- Will there be an era in which travel agencies make trips to the past and the future?
Traveling through time is the dream of many people and has been a fertile theme for many science fiction novels, perhaps the most famous in this area is the novel Time Machine ( The Time Machine ), Written by Herbert Wells in 1895 and her story revolves around the inventor of an eccentric young man whose lover died in an incident in which he made a wonderful machine that traveled to the past in the hope of restoring life by changing the events that led to her death, but soon discovered that the change of justice And fate is an impossible task and decides instead to embark on a journey to the future, and found the cinema in this story and other novels that talk about travel through time an interesting subject for many of the fictional films that we see the hero is occasionally transmitted by mechanical machine Complex and sophisticated, and sometimes more simplistically where
For centuries, the subject of travel through time was limited to fiction and fiction, but at the beginning of the 19th century Albert Einstein published his theory of special relativity and its importance in general relativity (1) several years later. This theory turned many concepts and principles of physics For thousands of years, man has dealt with three spatial dimensions to determine the location of things and calculate the distances that separate them. These dimensions are height, width and height, but Einstein added a fourth dimension is time, which according to his theory is not something Fixed as we are always used to it, but it is relative and changeable, whenever The velocity of an object is slowed by the speed of light. For a person traveling in a spacecraft at a velocity of about 186,000 miles per second, time will pass slower than the person who lives on Earth. On this basis travel through time Theoretically possible, For a person to travel to the future, he should only go on a space trip at the speed of light and then return after several years to see the earth and has been tens of years old, while his age is only a few years! (2), but what if the future did not like our space traveler? What if the earth is found after a hundred years and has doubled its population and its resources and increased wars and famine on them, will regret his travel and wish he could go back to the past is also possible in theory, and all that will require a space traveler to make a trip Like this is the launch of the spacecraft faster than the speed of light, then time will begin to slow down to the degree that the return to the past. But what if the future did not like our space traveler? What if the earth is found after a hundred years and has doubled its population and its resources and increased wars and famine on them, will regret his travel and wish he could go back to the past is also possible in theory, and all that will require a space traveler to make a trip Like this is the launch of the spacecraft faster than the speed of light, then time will begin to slow down to the degree that the return to the past. But what if the future did not like our space traveler? What if the earth is found after a hundred years and has doubled its population and its resources and increased wars and famine on them, will regret his travel and wish he could go back to the past is also possible in theory, and all that will require a space traveler to make a trip Like this is the launch of the spacecraft faster than the speed of light, then time will begin to slow down to the degree that the return to the past.
But since walking the speed of light is almost an impossible task in the near future, the speediest space humans vehicles speed did not exceed several kilometers per second, so inspected scientists for other ways to travel through time and found seized upon black holes ( Black Hole ) , which is a ghost For dead stars crushed mass and condense until it turned into a very small particle but it is a huge attraction does not escape anything passes by the grip is swallowing even light and affect the movement of objects nearby, and some scientists believe that there are a kind of black holes called rotating holes if An object was able to enter it and was somehow able But the theory remains in fact a dead letter because scientists do not yet know exactly what happens inside the black holes, let alone a trip Into it.There is another theory that suggests the use of cosmic strings or strings to travel over time. Scientists say that these threads lag behind the great cosmic explosion that the universe is thought to have originated from, and that these threads span long distances across the universe. "Space-time" curvature and thus allow for time travel, but the problem with this theory lies in how the human will be able to access these cosmic threads. He lacks the advanced technology and the enormous energy he needs to do such work.There are other theories, but they are all just mathematical ideas and equations that scientists can not ever achieve. By measuring the time on the spacecraft that went on missions outside the Earth and compared with the earth time, although the time difference scientists obtained was very simple, due to the slow current space vessels, but it was enough to prove the validity of Einstein's theory on the relativity of time.The subject of travel through time did not raise the scientists of physics and astronomy only and did not stop at the problem of the method or technology that will enable the person to do such trips, but the other questions raised by a number of philosophers and the inability of scientists to provide a response and the answer to them, one of the most prominent The questions are what is called the "Paradox of Grandpa", in which philosophers assume the possibility of traveling through time and assume that someone has been able to return to the past and killed his grandfather before he meets and marries his grandmother, so his father will never be born and therefore he will not be born And therefore he will not be able to make a trip to the past because it originally does not exist in the A future, a really fantastic puzzle, looks like the egg and chicken puzzle and it undermines the possibility of time travel from the ground up,Of course, scientists who support the idea of travel through time did not sit silent and they see philosophers rained with a barrage of complex questions, but tried to provide some answers and solutions to these questions, and the most prominent of these solutions is the theory of the universe or parallel dimension, which assumes that each time dimension events of its own No one can come from another dimension or time to change it, that is, it is like the idea of fate and inevitability, so the so-called "paradox of grandfather" can not occur because a person may be able to travel to another time dimension but will not have the ability to Influence it or change its events.
As for future travelers, some scholars do not deny the possibility that there will be people in our world and our present age coming from the future, but they are in disguise and do not announce themselves, because the human beings of the future will be at an advanced level of progress and urbanization and will be more humane and more Are not responsible for their actions so these future travelers will not advertise themselves and they will not do any work to try to change the past but will be watching, that is for them is like watching a movie, and there is another hypothesis that the possibility of travel through time will not be Available unlessIn practice, there is no chance of a time trip in the foreseeable future, and only God knows when humanity will be able to achieve such a degree of development. But we must remember that all of us are traveling. Days and years. It is an inevitable journey that every human being takes once in his life and is always one way forward. The older people may be more aware of the speed and shortness of this journey. They are also the most eager people for a time machine that brings them back to days. Youth and youth, but they realize that it is a distant dream so you see them
If only young people would come back ... tell him what he did
1. Apart from entering the complex laws and mathematical equations that most people will misunderstand, relativity simply means that everything in the universe is relative and there is nothing absolute. The simplest example is when you are riding in a speeding car and watching things outside like trees For example, what your eyes see is that these trees are moving (in fact you are moving). The person standing in the street sees the same trees fixed in place. To simplify the matter more, assume that another car is running next to your car and at the same speed. The other car is stationary and does not move because it is moving at the same speed and you can even break To talk with the driver, either the person standing in the street Vsirha moving and moving, and on this basis, all the concepts of our lives are relative to the perception of each person, and even you dear reader may calculate yourself sitting behind your computer without movement, but you move very quickly In terms of not knowing, The Earth revolves around itself at about a quarter of a mile per second and around the sun at 18 miles per second. Our solar system spills into our Milky Way galaxy at 125 miles per second and our entire galaxy travels at 40,000 miles per second! .. Stick to something so as not to fly from speed !.2 - On the difference in the time of the sky from the time of the earth there is a Koranic verse that says: "The matter is ordered from heaven to earth and then limp to him on a day that was a thousand years of what you count (Surat al - Sajdah).This story was first published in Arabic in the Kingdom of Fear on 31/08/2009
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