What would happen if...
21 December 2008, 12:38 AM
#1
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What would happen if...
time travel was invented?
I was just thinking, if time travel ever becomes reality then we are well and truly up plop creek without a a paddle.
I was just thinking, if time travel ever becomes reality then we are well and truly up plop creek without a a paddle.
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21 December 2008, 10:18 AM
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I read some books about it a few years ago, When I thought I was brainy enough to be able to understand. From what I gathered theoretically it is possible but... and this is where I got lost, We would only be able to go back, not forward....
But if your back surely you would have to be able to go forward again otherwise you'll have to invent time travel all over.....
Something to do with geodesics and magnets or something similar.
But if your back surely you would have to be able to go forward again otherwise you'll have to invent time travel all over.....
Something to do with geodesics and magnets or something similar.
21 December 2008, 10:26 AM
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A big write up about this on Wikipedia including a piece from Stephen Hawkins, he states that if time travel were to be carried out we would be over run with tourists from the future.
As we have`nt got any that surely means no time travel have been carried out.
As we have`nt got any that surely means no time travel have been carried out.
21 December 2008, 10:38 AM
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Time travel has already taken place, proving the theory. Before anyone thinks of DeLoreans and J-CVD: the travel was only over a fraction of a second.
21 December 2008, 10:50 AM
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Some of the greatest debates happen around this time 
Do you have any articles on this? Looks an interesting read.
Time travel has already taken place, proving the theory. Before anyone thinks of DeLoreans and J-CVD: the travel was only over a fraction of a second.
21 December 2008, 12:21 PM
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You "time travel" every time you go abroad on holiday , due to time dilation (As Einstein predicted). When you go on a plane you are about 0.0000000005 seconds younger when you get off it (assuming you travelled to say, Australia).
THe BBC site does a better job of explaining it:
Time dilation is a temporal effect on matter moving at speeds near lightspeed. When matter reaches this 'relativistic speed', time dilation becomes apparent. Albert Einstein first postulated time dilation as a side-effect of an absolute lightspeed. In order for the speed of light to remain constant no matter how fast the observer is travelling, time must slow down proportionately for said observer. Thus, the effect produced is a perceived slowing of time for any matter moving at relativistic speeds, from the perspective of a stationary observer, and a perceived speeding up of time for any stationary matter, from the perspective of a relativistic observer.
Effects
Time dilation is an exponential effect, which means that it remains small for most of sublight speed, but becomes powerful very quickly when close to lightspeed. If one were ever to reach lightspeed, time would come to a standstill for them (to us), while everyone else would freeze (to them). Time dilation has been experimentally proven several times. By synchronizing two atomic clocks, then flying one for extended amounts of time in an airplane and comparing its time reading with the stationary clock, scientists have discovered a dilation of a few millionths of a second for the airborne clock. Don't think that you'll age any slower by flying, though: if one spent his or her entire life on a non-stop airplane flight, they would only be one-ten thousandth of one second younger than anyone grounded for the same amount of time.
THe BBC site does a better job of explaining it:
Time dilation is a temporal effect on matter moving at speeds near lightspeed. When matter reaches this 'relativistic speed', time dilation becomes apparent. Albert Einstein first postulated time dilation as a side-effect of an absolute lightspeed. In order for the speed of light to remain constant no matter how fast the observer is travelling, time must slow down proportionately for said observer. Thus, the effect produced is a perceived slowing of time for any matter moving at relativistic speeds, from the perspective of a stationary observer, and a perceived speeding up of time for any stationary matter, from the perspective of a relativistic observer.
Effects
Time dilation is an exponential effect, which means that it remains small for most of sublight speed, but becomes powerful very quickly when close to lightspeed. If one were ever to reach lightspeed, time would come to a standstill for them (to us), while everyone else would freeze (to them). Time dilation has been experimentally proven several times. By synchronizing two atomic clocks, then flying one for extended amounts of time in an airplane and comparing its time reading with the stationary clock, scientists have discovered a dilation of a few millionths of a second for the airborne clock. Don't think that you'll age any slower by flying, though: if one spent his or her entire life on a non-stop airplane flight, they would only be one-ten thousandth of one second younger than anyone grounded for the same amount of time.
21 December 2008, 12:26 PM
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21 December 2008, 12:27 PM
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You "time travel" every time you go abroad on holiday , due to time dilation (As Einstein predicted). When you go on a plane you are about 0.0000000005 seconds younger when you get off it (assuming you travelled to say, Australia).
THe BBC site does a better job of explaining it:
Time dilation is a temporal effect on matter moving at speeds near lightspeed. When matter reaches this 'relativistic speed', time dilation becomes apparent. Albert Einstein first postulated time dilation as a side-effect of an absolute lightspeed. In order for the speed of light to remain constant no matter how fast the observer is travelling, time must slow down proportionately for said observer. Thus, the effect produced is a perceived slowing of time for any matter moving at relativistic speeds, from the perspective of a stationary observer, and a perceived speeding up of time for any stationary matter, from the perspective of a relativistic observer.
Effects
Time dilation is an exponential effect, which means that it remains small for most of sublight speed, but becomes powerful very quickly when close to lightspeed. If one were ever to reach lightspeed, time would come to a standstill for them (to us), while everyone else would freeze (to them). Time dilation has been experimentally proven several times. By synchronizing two atomic clocks, then flying one for extended amounts of time in an airplane and comparing its time reading with the stationary clock, scientists have discovered a dilation of a few millionths of a second for the airborne clock. Don't think that you'll age any slower by flying, though: if one spent his or her entire life on a non-stop airplane flight, they would only be one-ten thousandth of one second younger than anyone grounded for the same amount of time.
THe BBC site does a better job of explaining it:
Time dilation is a temporal effect on matter moving at speeds near lightspeed. When matter reaches this 'relativistic speed', time dilation becomes apparent. Albert Einstein first postulated time dilation as a side-effect of an absolute lightspeed. In order for the speed of light to remain constant no matter how fast the observer is travelling, time must slow down proportionately for said observer. Thus, the effect produced is a perceived slowing of time for any matter moving at relativistic speeds, from the perspective of a stationary observer, and a perceived speeding up of time for any stationary matter, from the perspective of a relativistic observer.
Effects
Time dilation is an exponential effect, which means that it remains small for most of sublight speed, but becomes powerful very quickly when close to lightspeed. If one were ever to reach lightspeed, time would come to a standstill for them (to us), while everyone else would freeze (to them). Time dilation has been experimentally proven several times. By synchronizing two atomic clocks, then flying one for extended amounts of time in an airplane and comparing its time reading with the stationary clock, scientists have discovered a dilation of a few millionths of a second for the airborne clock. Don't think that you'll age any slower by flying, though: if one spent his or her entire life on a non-stop airplane flight, they would only be one-ten thousandth of one second younger than anyone grounded for the same amount of time.
Hmmm, so does that mean that if I travel by plane a lot more my wrinkles will get smaller?
21 December 2008, 12:40 PM
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21 December 2008, 12:48 PM
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