You are 15 years old when you left Earth in a spacecraft traveling at about 99.5% of the speed of light (which is much faster than we can achieve now), and celebrated only five birthdays during your space journey. When you get home at the age of 20, you would find that all your classmates were 65 years old, retired, and enjoying their grandchildren! Because time passed more slowly for you, you will have experienced only five years of life, while your classmates will have experienced a full 50 years. So, if your journey began in 2003, it would have taken you only 5 years to travel to the year 2053, whereas it would have taken all of your friends 50 years. In a sense, this means you have been time traveling. This is a way of going to the future at a rate faster than 1 hour per hour.
Time travel is a recognized concept in philosophy and fiction, but travel to an arbitrary point in time has a very limited support in theoretical physics, usually only in conjunction with quantum mechanics. It is the concept of movement between different points in time in a manner analogous to moving between different points in space, typically using a hypothetical device known as a time machine.
Albert Einstein showed that time is an illusion; it is relative, which can vary for different observers depending on speed through space. Einstein said time is the "fourth dimension.Space is three-dimensional arena, which provides a traveler with coordinates length, width and height showing location. Time provides another coordinate direction, which always moves forward. Einstein's theory of special relativity says that time slows down or speeds up depending on how fast you move relative to something else. It may be speed of light, a person inside a spaceship would age much slower than his twin at home which can blend time.
A four-dimensional fabric called space-time , where anything that has mass sits on that piece of fabric; it causes a bending of space-time. The bending of space-time cause objects to move on a curved path and that curvature of space is what we known as gravity. The effects of gravity, as well as the satellites increased speed above the Earth relative to observers on the ground, make day. This effect is called time dilation. Relativity also provides scenarios that could allow travelers to go back in time; one possibility could be to go faster than light in vacuum. Einstein's equations, though, show that an object at the speed of light would have both infinite mass and a length of 0. This appears to be physically impossible and appear to make time travel difficult.
Other groups of scientists proposed solutions to jump back and forth in time .Some theories were Infinite cylinder, Black holes, cosmic strings, time machines etc...
Cosmic strings are in loops, with no ends. The approach of two such strings parallel to each other would bend space-time so vigorously and in such a particular configuration that might make time travel possible, in theory.
Time machine, a device for travelling back and forward in time. Time machine research often involves bending space-time so far that time lines turn back on themselves to form a loop, technically known as a "closed time-like curve."Time machines constitute an exotic form of matter called "negative energy density." Such exotic matter has bizarre properties, including moving in the opposite direction of normal matter when pushed.
In the past few years, some scientists have used those distortions in space-time to think of possible ways time machines could work. Some like the idea of "worm holes," which may be shortcuts through space-time. But we don't know whether they are possible for real objects. Still the ideas are based on good, solid science. In all time travel theories allowed by real science, there is no way a traveler can go back in time to before the time machine was built.
Some scientists disagree with above theories and concluded time travel is impossible no matter what your method would be and humans are unable to withstand time travel at all. Traveling nearly the speed of light would only take a centrifuge, but that would be lethal.
Time travel is a recognized concept in philosophy and fiction, but travel to an arbitrary point in time has a very limited support in theoretical physics, usually only in conjunction with quantum mechanics. It is the concept of movement between different points in time in a manner analogous to moving between different points in space, typically using a hypothetical device known as a time machine.
Albert Einstein showed that time is an illusion; it is relative, which can vary for different observers depending on speed through space. Einstein said time is the "fourth dimension.Space is three-dimensional arena, which provides a traveler with coordinates length, width and height showing location. Time provides another coordinate direction, which always moves forward. Einstein's theory of special relativity says that time slows down or speeds up depending on how fast you move relative to something else. It may be speed of light, a person inside a spaceship would age much slower than his twin at home which can blend time.
A four-dimensional fabric called space-time , where anything that has mass sits on that piece of fabric; it causes a bending of space-time. The bending of space-time cause objects to move on a curved path and that curvature of space is what we known as gravity. The effects of gravity, as well as the satellites increased speed above the Earth relative to observers on the ground, make day. This effect is called time dilation. Relativity also provides scenarios that could allow travelers to go back in time; one possibility could be to go faster than light in vacuum. Einstein's equations, though, show that an object at the speed of light would have both infinite mass and a length of 0. This appears to be physically impossible and appear to make time travel difficult.
Other groups of scientists proposed solutions to jump back and forth in time .Some theories were Infinite cylinder, Black holes, cosmic strings, time machines etc...
Cosmic strings are in loops, with no ends. The approach of two such strings parallel to each other would bend space-time so vigorously and in such a particular configuration that might make time travel possible, in theory.
Time machine, a device for travelling back and forward in time. Time machine research often involves bending space-time so far that time lines turn back on themselves to form a loop, technically known as a "closed time-like curve."Time machines constitute an exotic form of matter called "negative energy density." Such exotic matter has bizarre properties, including moving in the opposite direction of normal matter when pushed.
In the past few years, some scientists have used those distortions in space-time to think of possible ways time machines could work. Some like the idea of "worm holes," which may be shortcuts through space-time. But we don't know whether they are possible for real objects. Still the ideas are based on good, solid science. In all time travel theories allowed by real science, there is no way a traveler can go back in time to before the time machine was built.
Some scientists disagree with above theories and concluded time travel is impossible no matter what your method would be and humans are unable to withstand time travel at all. Traveling nearly the speed of light would only take a centrifuge, but that would be lethal.
Evidences of time travel:
Iconic image of person speaking on cellphone in Charlie Chaplin film was a clue of time travel.
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The man often called Time Traveling
Hipster from the reopening ceremony of South Forks Bridge in Gold
Bridge, British Columbia, Canada, 1941.
That type of sunglasses with leather side shields were used since the 1920s and he's wearing the sweater of a hockey team instead of a modern T-shirt, but it's still a cool photo!
In the Spring 1988 issue of Strange Magazine, Ken Meaux shared a remarkable tale about a time slip incident that occurred on Highway 167 north of Abbeville, Louisiana. It happened on October 20, 1969. A man, revealed by Meaux only as L.C., and his “business associate” Charlie, were driving down Highway ...
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| The 19th century CD. |
This nineteenth century photo seems to show a bunch of people clustered round a CD.Sadly, it’s at least a century before ‘Brothers in Arms’ by Dire Straits.
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| Air Marshal says he travelled in time |
British Air Marshall Sir Victor Goddard claimed to have travelled forward in time in 1935 – seeing a vision of an airfield as it would be in the future.
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| Swiss watch in Chinese tomb |
A Swiss watch found inside an undisturbed 400-year-old tomb rom the Si Qing era.
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