a-x-med
1st October 2009 - 03:34 PM
Is Time Travel Possible?
"Not all scientists agree but according to Einstein and quantum theory, time travel could be possible.
According to Einstein's special theory of relativity, our lives pass more slowly if we travel close to the speed of light. He has also shown that we live longer if we go and live in an intense gravitational field. Einstein has thus opened up the future and shown that it is possible to slow down time for ourselves, leave the Earth and come back to meet our grandchildren or our great-grandchildren. But he has not shown that it is possible to come back! Physicist Steven Hawking has suggested that it is not possible to go back in time because you could kill your own grandmother before your mother or father were born and so make it impossible for you to be born.
But could it still be possible?"
I say this - E=mc^2
If the thing is m kg, it needs E=mc^2 energy to get a speed of light. But how? Then it will disappear, Because, if the thing is 100 kg, it needs a material with 100 kg, which changes in energy and moves the thing with the speed of light, If they will together, then the whole mass will 200 kg, and 100 kg of the material will give an energy near light speed, not a light speed, just c/2 we shall get, This energy must be given from abroad, and it is impossible, so i mean, we never can move with speed of light.
a-x-med
1st October 2009 - 04:36 PM
my skype a-x-med
light in the tunnel
1st October 2009 - 09:47 PM
How much slower does time go per G increase in gravity, according to this theory?
a-x-med
1st October 2009 - 10:30 PM
QUOTE (light in the tunnel+Oct 1 2009, 09:47 PM)
How much slower does time go per G increase in gravity, according to this theory?
Time travel is possible and is essential in our everyday life! The GPS network requires such precise calculations of its positions that the time dilation resulting from its speed must be taken into account otherwise the system fails.
In addition, slight annomalies in the orbit of Mercury have also been explained by the time dilation effect caused by the Sun's gravtiational field. There are many more cases in which time dilation occurs, so yes it is possible to time travel ( or maybe).
At present, physics doesn't think it's possible to travel at the speed of light, only close.
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