"Scientist imbeciles. I've been saying this for years. Hey, you got any tequila?"
Posted on 08/14/2008 5:51:05 AM PDT by BloodOrFreedom
Travel by bubble might seem more appropriate for witches in Oz, but two physicists suggest that a future spaceship could fold a space-time bubble around itself to travel faster than the speed of light.
We're talking about the very distant future, of course.
The idea involves manipulating dark energy — the mysterious force behind the universe's ongoing expansion — to propel a spaceship forward without breaking the laws of physics.
"Think of it like a surfer riding a wave," said Gerald Cleaver, a physicist at Baylor University. "The ship would be pushed by the spatial bubble and the bubble would be traveling faster than the speed of light."
In theory, the universe grew faster than the speed of light for a very short time after the Big Bang, driven by the dark energy that represents about 74 percent of the total mass-energy budget in the universe.
Dark matter constitutes 22 percent of the budget, and normal matter (stars, planets and everything you see) makes up the remaining 4 percent or so.
Strange as it sounds, current evidence supports the notion that the fabric of space-time can expand faster than the speed of light, because the reality in which light travels is itself expanding.
Cleaver and Richard Obousy, a Baylor graduate student, tapped the latest idea in string theory to devise how to manipulate dark energy and accelerate a spaceship.
Their notion is based on the Alcubierre drive, which proposes expanding space-time behind the spaceship while also shrinking space-time in front.
String theorists had believed that a total of 10 dimensions exist, including height, width, length and time.
The other six dimensions exist largely as unknowns, but everything is based on hypothetical one-dimensional strings.
(Excerpt) Read more at foxnews.com ...
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Yeah except for you’re wrong...sort of. In fact, special relativity IS all about frames of reference, and INERTIAL frames of reference to boot. Meaning that in non-inertial frames of reference (i.e. accelerating) special relativity does not apply. However, there may or may not be some yet undiscovered principle that prevents a causal-paradox in general relativity and therefore completely prevents FTL travel. At this point, with what we know, it is possible...with enough energy that is.
"Scientist imbeciles. I've been saying this for years. Hey, you got any tequila?"
Nothing. No light would come out.
But; it would make it impossible for the speed camera to read your license plate.
True, about Einstein and SR, but they are not talking about objects moving THROUGH space faster than light, but rather manipulating space-time itself. Also, what Einstein actually said in his STR was that nothing (with mass) can be accelerated-to OR slowed-downed-to the speed of light. In theory, he said, something could already be traveling faster than light (see 'Tachyons').
From the article: "Strange as it sounds, current evidence supports the notion that the fabric of space-time can expand faster than the speed of light, because the reality in which light travels is itself expanding."
You’ll have to ask the pilot to slow down so you can watch the in-flight movie.
>Sometimes you are the bug, sometimes you are the windshield.
Depends on your frame of reference.
This article makes little sense. It’s written far more from a science-fiction perspective than an astrophysics perspective. The existence of the “space-time fabric,” for example, is not based in physical reality but rather in human perception. The last sentence in particular is bad. This is easy to assume if you believe in String Theory, but if you believe in the currently understood observable universe, it becomes more and more meaningless. For example, “the reality in which light travels” is, in a vacuum, nothing. It can neither expand nor contract because it is nothing. Again, however, if you’re making the assumption that “nothing” is actually composed of superstrings, then you can make that assumption.
Guys, i dont know how to tell you this, and i know it upsets a lot of science fiction, but there’s only 3 dimensions, up and down, back to front, and side to side. And time doesn’t go faster if the clock is taken into space. Time isn’t a dimension. A lot of this “physics” is some guy does math, sees the observable world doesnt match his correct math, and then announces, “hey guys, they world my math describes must be INVISIBLE”. It couldnt possibly be that his starting place had an error so of course his math is correct but the reality doesn’t match. No magic strings,,none of it. PT Barnum spoke to all this rather accurately,,,,
That's exactly how a sailboat (or sailboard) on a beam reach (wind from the side) works.
Under ideal conditions the boat can actually go faster than the wind that provides the force propelling it.
Actually "reality" is expanding at an infinite rate spherically toward the "static" infinite expanse, while contracting at an infinite rate spherically toward the static "inifintesimality, also while multiplying those numbers of dynamic "infinitesimalities" at an infinite rate. (The numbers of infinitesimalities is the filling of the expanse "shell") All three are the dynamic boundaries of the Infinite "gaming-area"
Well, except during rush hour of course.
Are you implying that the universe is expanding into an already existing infinite space? Because the current Big Bang model says that the universe is all that there is. That there is no "space or time" outside the universe because they were created in the Big Bang.
and guys, yes, i know i’m a salmon swimming upsteam on this issue. But i think a lot of this modern physics such as string hypothesis (you need to be able to TEST a theory)is about as real as spoon bending with your mind. It offends my sense of reason. Well, thats all, I’m heading into the bunker, so fire away.
Of course time is a dimension. It's a 'coordinate', just as x, y and z. For example, if you are going to meet someone at a specific location somewhere, you need to also specify a time.
And time doesn’t go faster if the clock is taken into space.
Right, time SLOWS DOWN when you are moving, as seen from the point of view of an outside 'stationary' observer. This has already been proven in several tests involving airliners. In fact, GPS technology takes this effect into account in its calculations. i.e. the location seeking system relies on the signal delay time between several really fast moving satellites and your location on Earth.
Relativity in the Global Positioning System
Neil Ashby
Dept. of Physics, University of Colorado
Boulder, CO 80309–0390
Abstract: The Global Positioning System (GPS) uses accurate, stable atomic clocks in satellites and on the ground to provide world-wide position and time determination. These clocks have gravitational and motional frequency shifts which are so large that, without carefully accounting for numerous relativistic effects, the system would not work. This paper discusses the conceptual basis, founded on special and general relativity, for navigation using GPS. Relativistic principles and effects which must be considered include the constancy of the speed of light, the equivalence principle, the Sagnac effect, time dilation, gravitational frequency shifts, and relativity of synchronization. Experimental tests of relativity obtained with a GPS receiver aboard the TOPEX/POSEIDON satellite will be discussed. Recently frequency jumps arising from satellite orbit adjustments have been identified as relativistic effects. These will be explained and some interesting applications of GPS will be discussed.
http://relativity.livingreviews.org/Articles/lrr-2003-1/index.html
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“Acceleration (and deceleration) does.”
Depends on the ‘rate’.
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