I�m no engineer or scientist or authority by any stretch of the imagination (my degree was in math), so if my ignorance abounds, then that�s my
excuse.
www.abovetopsecret.com..." target='_blank' class='tabOff'/>
First of all, it should be noted that while Einstein's theory of special relativity prevents real mass, energy, or information from traveling
�through free space� faster than the speed of light, there�s nothing preventing "apparent" motion faster than light speed as long as there�s no
energy or information transferred.
Traveling at superluminal (faster-than-light/FTL) speed violates the usual understanding of the "flow" of time. As I understand it, IF you were able
to achieve superluminal speed, you would effectively travel backward in time. So, theoretically, you could end up arriving where you started before
you left.
There is a class of particles called tachyons that apparently violate Dr. Einstein�s speed limit. Tachyons have some strange properties. For instance,
when they lose energy, they gain speed. Therefore, when tachyons gain energy, they slow down. The
slowest speed possible for tachyons is the
speed of light. If tachyons indeed exist, then their existence would seem to challenge special relativity. Strange, huh?
At any rate, different ideas have come about in an attempt to find loopholes in relativity and the universal speed limit. One of the more interesting
ideas in my view is the Alcubierre Warp Drive propulsion system suggested by Mexican theoretical physicist Miguel Alcubierre. His idea entails a
propulsion system that would expand spacetime behind the starship and contract spacetime in front of it. The starship itself would simply sit in a
locally flat region of spacetime bounded by a �warp (space) bubble�. The bubble would travel along at an arbitrary rate of speed as spacetime expands
behind it and contracts in front of it (relativity addresses the motion of mass, energy and information within space, and not the motion of space
itself - there�s no known limit on how fast �space itself� can travel). Relative to the warp bubble the ship would be at rest and would therefore be
immune to the effects of acceleration, deceleration and the relativistic effect of time dilation. This method is clever in that faster than light
travel is achieved without violating any of the principles of relativity.
Here are a couple links for more info on the Alcubierre Warp Drive:
www.npl.washington.edu...
www.astro.cf.ac.uk...
Taking a different approach, you might consider the following:
It�s been shown that the intrinsic impedance of free space is analogous to the impedance in an electronic circuit. The logic used in antenna design is
based on that analogy.
Taking that idea a bit further, it�s been suggested that the permittivity and permeability of free space are analogous to the capacitance and
inductance, respectively, of a tuned circuit. In this case, the speed of light (approx 3E^5 meters/sec) would be analogous to the resonant frequency
of a tuned circuit.
Assuming the above, the question is, can a region of free space be EFFECTIVELY tuned to different resonant speeds by manipulating it
somehow?
If Einstein was correct in that a mass cannot be accelerated to light speed, could we perhaps "cheat" by bringing DOWN the effective speed of light
in a given volume of space?
It would seem that by manipulating electromagnetic properties in certain ways, then perhaps we might be able to alter the properties of a region of
space. If we could do that, then we might be able to perform all sorts of exotic magical tricks.
Sorry, no links for the above. It comes from my general knowledge of the topic and my own thoughts regarding it.
That�s my limited contribution to the faster-than-light (FTL) subject. I doubt it answered any questions. Hopefully, though, it at least raised a few
�
www.abovetopsecret.com..." target='_blank' class='tabOff'/>
[edit on 9/12/2004 by netbound]