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The names of all the continents end with the letter they start with. |
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Realistic Time Machine? New design could forgo exotic ingredient
Posted on Tuesday, July 19, 2005 (CDT) by Thoth
 The laws of physics seem to allow time travel, but no one has had much hope of building an actual time machine because it would take such exotic conditions and materials.
Now, physicist Amos Ori of the Technion Israel Institute of Technology in Haifa has come up with a potentially more practical time machine design. Unlike most previous proposals, this one requires only normal matter and the vacuum known to exist in space, says Ori.
One type of time travel occurs routinely here and now: our inexorable one-way drift into the future. Einstein's special theory of relativity revealed the possibility of accelerated travel into the future.
Suppose a person spends a year in a rocket that's traveling slightly
less than the speed of light. Because motion at such enormous speeds
drastically slows the clock for the traveler, that person could return
to Earth to find that many years had elapsed at home. In that way, a
traveler could leap into the future.
Retreating into the past is another matter, but one that relativity
theory also suggests might be possible. The theory shows that gravity
curves space-time and slows clocks. That's why time-travel theorists
have proposed that regions of space-time might naturally, or by human
intervention, be made to curve back onto themselves. Someone moving
around such a loop could travel back in time (SN: 4/11/98, p. 231:
http://www.sciencenews.org/pages/sn_arc98/4_11_98/fob3.htm).
A new version of such a loop is what Ori proposes in the July 8
Physical Review Letters. The loop would form within an empty,
donut-shaped region of space-time enveloped by a sphere of normal
matter, he says. The distortion of space-time in the central donut
would result from other huge nearby masses, perhaps including a black
hole, or from interference of gravity waves propagating through the
donut. To return to the past, a traveler in a rocket would zip around
inside the donut, receding a little further into the past with each
orbit, Ori says.
Ken D. Olum of Tufts University in Medford, Mass., is skeptical that
Ori's concept could succeed. Until now, scientists have called for
using prodigious amounts of an exotic entity known as negative energy,
which theorists expect to exist only in minuscule quantities, for time
machines. In 1992, Stephen W. Hawking of Cambridge University in
England proved a theorem that rules out time machines built without
negative energy, Olum notes. Ori counters that Hawking's analysis
involves certain conditions that don't apply to his concept.
Igor D. Novikov of the Niels Bohr Institute in Copenhagen finds Ori's
concept of a donut-shaped core "very original and probably without
unrealistic parts." The new proposal "is a valuable contribution to
studies of potential time machines," he says.
Article Source
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Re: Realistic Time Machine? New design could forgo exotic ingredient
by artberry on Tuesday, July 19, 2005 (CDT)
(User Info | Send a Message) http://www.artberry.net | Problem is with Einstein’s theories is they are IMO wrong. A body rotating in space at speed X should always appear to rotate at the same speed at any two points at equal distance Y no matter how great Y is. This means a beam of light can rotate in an arc at many times faster than the speed of light.
If that were not so the speed of rotation of distant stars systems or even the rhythm of distant pulsars would slow or may even go in reverse. Also time travel should be simply a matter of going round and round and making yourself very giddy because if you draw a virtual line out from one's body it is moving at many thousands of times the speed of light in relation to even the nearest stars, so time travel would simply be case of getting very giddy. LOL
The fact that none of this appears to happen (unless you fall over an hit your head) means that time must be constant throughout the entire universe. Because the actual relationship of bodies in space, and speed of rotation, is not dictated by the light speed limit, but is totally limitless.
So IMO Einstein was clearly and patently wrong and the light beams projected via reflection even from a rotating disco mirror ball demonstrates this very well and it's probably about time scientists stopped wasting public money on such empty and useless experements that can simply never work. :) |
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Re: Realistic Time Machine? New design could forgo exotic ingredient
by Omphaloskepsis on Tuesday, July 19, 2005 (CDT)
(User Info | Send a Message) http://www.proxywhore.com/ | Problem is with Einstein’s theories is they are IMO wrong. A body rotating in space at speed X should always appear to rotate at the same speed at any two points at equal distance Y no matter how great Y is. This means a beam of light can rotate in an arc at many times faster than the speed of light.
A beam of light isn't a solid thing like a board of wood.
;) |
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