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To: rurgan

The mis-assumption is that gravity travels at c. It is well known that the sun’s gravitational influence on the earth isn’t 8 minutes c-retarded, instead it’s instantaneous; wanna know why?


18 posted on 07/05/2007 1:48:22 PM PDT by timer (n/0=n=nx0)
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To: timer

Yes, I would very much like to.


19 posted on 07/05/2007 1:52:54 PM PDT by patton (19yrs ... only 4,981yrs to go ;))
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To: timer
Yes I'd like to know why.

What do you think of the Heisenberg uncertainty principle . do you dismiss it like Einstien did?

20 posted on 07/05/2007 4:24:07 PM PDT by rurgan (socialism doesn't work. Government is the problem not the solution to our problems.)
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To: timer
Action at a Distance.
By contrast, according to quantum mechanics, an experimenter could entangle a pair of particles, separate them by vast distances, then instantaneously change the state of one by changing the state of the other - even at distances of millions of light years.

This "spooky action at a distance," according to Albert Einstein and two colleagues, was a direct result of quantum mechanics if it failed to have more-classical underpinnings. It so defied common sense that they refused to accept quantum mechanics as a complete explanation for how physics really worked at the level of the very small.

The debate remained in the realm of "thought experiments" until 1964, when Irish physicist John Bell, working at the European Center for High Energy Physics in Geneva, described a way to test the idea.

Moreover, he concluded that if one followed the details of Einstein's argument to their logical conclusion, quantum mechanics was more than incomplete, it was wrong. This triggered an initial wave of experiments that demonstrated entanglement in the 1970s and '80s.

In 1997, a team at the University of Geneva conducted a particularly dramatic demonstration by entangling packets of light called photons, then sending them in opposite directions down fiber-optic lines to detectors nearly seven miles away.

When they measured properties of one photon, it had an instantaneous effect on the other. If the interaction behaved in a classical way, a measurable amount of time would have passed between measurement of one and the effect on the other.

Polzik's team is riding what Dr. Wootters calls a "new wave" of entanglement experiments, which has emerged only in the mid-1990s and is driven by the quest to design and build quantum computers.

Cal Tech physicist Richard Feynman is credited with being the first to propose the use of quantum computing, particularly for studying quantum phenomena.

Speed, and more speed

But the idea got its biggest boost in 1993, researchers say, when Peter Shor at AT&T Laboratories in Florham Park, N.J., showed that a quantum computer could solve several types of problems much faster than they could be solved on a conventional computer.

Such problems range from factoring large prime numbers, the key to breaking data-encryption codes, to the "traveling salesman" problem, which tries to find the most efficient path for people to take if they need to visit several customers in a given amount of time.

Quantum computers, Wootters notes, require large assemblages of entangled particles to achieve the data-crunching power required to solve these problems. Entanglement also holds the key to quantum communication and quantum teleportation - ways of transferring quantum information within and among quantum computers.

The possibility of quantum teleportation was first posited in 1993 by IBM researcher Charles Bennett and colleagues.

http://www.csmonitor.com/2001/1004/p15s1-stss.html

21 posted on 07/05/2007 7:13:44 PM PDT by rurgan (socialism doesn't work. Government is the problem not the solution to our problems.)
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