Stephen Hawking Explains How to Build a Real Time Machine
Physicist Stephen Hawking is widely considered the smartest person in the world. You may think someone with his brain wouldn't waste his time dealing with something as illogical as time travel. Well, not only does he spend time on it, he thinks time travel is actually possible.
In an article in London's Daily Mail, Hawking, describing himself as a "physicist, cosmologist and something of a dreamer," admits the scientific community might scoff at his ideas:
Time travel was once considered scientific heresy. I used to avoid talking about it for fear of being labelled a crank. But these days I'm not so cautious.
Hawking writes that in science fiction movies, some crazy time machine speeds through a tunnel through the fourth dimension, thus traveling back or forward in time. Far-fetched, yes, writes Hawking, but not out of the realm of possibility.
Physicists have been thinking about tunnels in time too, but we come at it from a different angle. We wonder if portals to the past or the future could ever be possible within the laws of nature. As it turns out, we think they are. What's more, we've even given them a name: wormholes. The truth is that wormholes are all around us, only they're too small to see.
But there in lies the problem -- the size of these wormholes:
Unfortunately, these real-life time tunnels are just a billion-trillion-trillionths of a centimetre across. Way too small for a human to pass through - but here's where the notion of wormhole time machines is leading. Some scientists think it may be possible to capture a wormhole and enlarge it many trillions of times to make it big enough for a human or even a spaceship to enter.
So that is the challenge -- making the wormhole bigger. Even then, you'd need a really, really fast vehicle.
There's a cosmic speed limit, 186,000 miles per second, also known as the speed of light. Nothing can exceed that speed. It's one of the best established principles in science. Believe it or not, travelling at near the speed of light transports you to the future.
To put that into perspective, the fastest manned vehicle in history was Apollo 10, which reached 25,000 mph. A time traveling vehicle would have to go 2,000 times faster than that.
So perhaps we can't build our own time machine. Hawking's point is that it is theoretically possible. And what would Hawking do if he could go back in time?:
If I had a time machine I'd visit Marilyn Monroe in her prime or drop in on Galileo as he turned his telescope to the heavens.
Spoken like a true genius.
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The use of time paradox to refute time travel may miss the mark. I had considered the question, and then remembered Brownian motion. That a very large system of random and paradoxical quantum states can present a seemingly stable and predictable macro view is likewise difficult to imagine, yet nevertheless true. It could be possible that the events in time are likewise random, unpredictable (Heisenberg principle), and yet result in a steady, predictable, and rational flow of time. The fact remains that we do not know yet, and if current theory allows something, then that thing may be possible. It was James Clerk Maxwell's 1873 Treatise on Electricity and Magnetism that led to Guglielmo Marconi's first radio.
If I were to approach you 30 or 40 years ago (assuming you're 50 to 60 years old now) and were to explain to you how computers would evolve and change our lives in the future, would you believe me or write me off as a wacko? What if I went on to explain how almost everyone would have these things called cell phones and all the things they could do, an international space station, and the fact that in 2010 regular people who had some wealth could go into space just for fun? Just think about things people - imagine all the new technologies that we have now that we NEVER would have thought would come to fruision just several years ago and did. Just food for thought.
This article leaves out a few important points. Most theoretical time machines are bound by the date of their creation, in that one cannot travel back beyond the point where the time machine first becomes active.
Time travel was once considered scientific heresy. I used to avoid talking about it for fear of being labelled a crank. But these days I'm not so cautious.
http://easytravelclub.com
Easy Travel
happen in the future; because if it did, we would know about it now, because they would be here, or they would be mentioned in historical accounts.
The major restriction on theoretical time machines is that one cannot travel past the date of the time machines creation.
Did you read my comment to the previous poster entitled "clarity"?
So where are the people coming from the future NOW ?
Bill Gates is one of them?
Hawking was the one who pointed out this already, the first sentence. I don't think humans coming from an unknown future would have reasons to be in disguise, but you never know.
That's the thing about this wormhole theory of time travel. You would only be able to travel into the past as far back as the origin of the creation of the time "machine". It requires that you manipulate wormholes in such a way that one end is sent traveling at near light speed in order to differentiate its relative time from the other wormhole.
Therefore you would probably not be able to travel back to the 1940s using this method since nobody in the 1940s made a wormhole time machine. And we would likely not see any time travelers popping up in the present since we know that this wormhole method has not been developed.
Big Bang is Mythology, The Theory of Natural Selection is not even Evolution, Atheists are themselves disproved by their own beliefs take Big Bang and Big Crunch that's Pantheism, and the very idea that we are All units making up the All that is One is Pantheism not Atheism, The Theory of Natural Selection is not Evolution it's Science Fiction. If we can simply investigate Science we shall all come to know Atheism is Propaganda not Science.
I want Real Debate even if You or I get Offended by Our Prejudices
All though it's Good to be Civil.
I Want Real Debate among Us all.