Even if you did manage to bounce some light off one, the mere act of observing it would knock it off course.
Exactly, bet my last pound this is an experimental error.
Even if you did manage to bounce some light off one, the mere act of observing it would knock it off course.
Monkey said:While the results of this experiment may be consistent, as of yet it has not been independently verified, and we cannot treat it as such.
Quite right. The theory of relativity has stood for a long time. It'll take some very good experimental evidence to knock it down. Might I suggest that one way to improve the accuracy of this experiment is to increase the distance. It shouldn't be too difficult to set up a source and detector on opposite sides of the planet.![]()
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Meanwhile, what's all this time travel business. I keep hearing it on the news and I get the distinct impression that a lot of people are jumping to a lot of highly dubious conclusions.![]()
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What could you do with faster than light travel? Well, one thing you could do, in theory, is look back and see yourself leave.![]()
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But is this really time travel?
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I don't think so. All you're doing is observing what's already happened. You can observe the effect (arrival) before the cause (leaving). What you can't do is observe the effect then go back and change the cause, which is what true backwards time travel would allow.
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Maybe you've seen one of those diagrams in a physics book that shows a cone standing point downwards on top of another. The point where the two meet represents your present position in a 2D space (3D is too difficult to draw). The upper cone contains all the points that you can reach without exceeding the speed of light while the lower cone contains all the points that you could have come from.
So far so good but all the books I've read jump to a rather nebulous conclusion, namely that faster than light travel will allow you to escape from the upper cone (which it will) and re-enter the lower one.![]()
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This is not at all obvious. It's not even clear that the lower cone (your past) still exists.
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As I once said in another thread, to achieve true backwards time travel you would have to restore the universe to an earlier state, something that the second law of thermodynamics will not allow.
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It also raises the question; why do the other LHC's in the world haven't raised this question?
It also raises the question; why do the other LHC's in the world haven't raised this question?
What other LHCs? There is only one LHC, and it had wasn't used in the actual experiment being discussed.
Well, it wasn't, but the uninformed don't realise that, as they don't realise that LHC's exist elsewhere...like America, they have a race to find stuff before the other.
Mickymoody said:But on their return to Earth, time would have passed as normal, so you would return -- -- but 10,000 years would have passed.
Are you sure?There is no time paradox here because the future hasn't happened yet.
The scientists that have come out is that energy can be created from nothing, which sounds good.
regarding the time travel thing. This was explained on Sky at Night, regarding black holes. Which may or may not be what the LHC is doing on a smaller scale; hence - IF it were possible to send a spaceship upto a blackhole, and orbit it, time for the spacemen would be normal. But on their return to Earth, time would have passed as normal, so you would return (that is only theory, as not currently possible), but 10,000 years would have passed. And people would say, WTF! Cavemen aliens! Thus negating the paradox theory. Like Planet of the Apes.
I think Stephen Hawking had the right idea about the big picture the universe, but I think that the universe seems to reflect the behaviour of the minute word, atoms and electrons and stuff flying about, split an atom, creates a big bang. Where did everything come from? A big bang.
I think, if this find is true, then the world of anti matter, gravity, and ghosts will finally be revealed. Took a long time for people to understand that the world is not flat (even though most Americans still believe this to be the case), many Scientists a**es are twitching.
It also raises the question; why do the other LHC's in the world haven't raised this question? Please don't get Brian Cox to answer, that works there, classic view of Einstein, Stephen Hawking, with his American voicebox, even though he is British...the grinning teeth of Cox...urgh!
If this find is true, a rare chance to say Einstein eh? What an Idiot!
I see you're still trying, poorly, to explain relativity to people who've been to school and don't need the BBC to educate them on the laws of physics.
Mickymoody said:Where they took two atomic clocks, that were completely syncronised, one they hooked up to an external PSU, and took on a plane around the world, then returned, checked, and the times were different.
and also said:energy CAN be created out of nothing
Tonka - As I understand it, as currently e=mc2 isn't viable, the scientists that I have seen on TV seem to suggest to me, as my interpretation of what they are saying, is that energy CAN be created out of nothing. You are basing your statement on current understanding of the known. At the moment, there is an unknown.
If energy is available for free...and as Uri Gellar says, and Einstein says, you can't create or remove energy, what happens when you die, where does the energy go? Is that your soul? Electrical signals in your brain...go where? You cannot delete energy. Electrical signals in your heart. It is possible to create a heart, by using stem cells. So where is the energy created from, to create electricity, to form a working heart? And when you die, where does it go to? Remember e=mc2 - it doesn't quite add up.
It might also answer the strange question of why gravity is so weak, as opposed to the other forces, and dark matter might explain why people 'see' ghosts. Digital photography and cctv seems to have stopped a trend?
I'm not arguing or disagreeing, I'm no scientist, I suspect there is one on here, and someone famous, just adding to the debate, please don't get detracted by a misnomer..LHC was used as an advisor, not factually.
TheOriginalTonkaToy said:E=mc2 works out every time it's been tested and it's been tested many many times indeed.