andrewr5 Posted May 26, 2007 Share Posted May 26, 2007 alright the Casimir is proven that light travels faster in an absence of matter faster than the universal constant of V so assume you have you have a three km long chamber encasing an electromagnetic field and you could accelerate an object to the speed of light then you removed the electromagnetic field and it broke the glass at this point it is traveling at more than the speed of light which is against the laws of physics because it wasn't always traveling faster than light would it dilate at an equal rate to its declaration or will it simply continue to move faster than light ? Link to comment Share on other sites More sharing options...
swansont Posted May 26, 2007 Share Posted May 26, 2007 Punctuation, please. It sounds like you are referring to the Scharnhorst effect that would be seen in a Casimir vacuum, but that requires a conductive boundary, and AFAIK has not been experimentally verified because the effect is so small. The wiki entry cites a reference (3) in claiming that causality would not be violated. http://en.wikipedia.org/wiki/Scharnhorst_effect Link to comment Share on other sites More sharing options...
grifter Posted May 30, 2007 Share Posted May 30, 2007 found a great page on the Scharnhorst effect, worth a read ! http://www.npl.washington.edu/AV/altvw43.html Link to comment Share on other sites More sharing options...
froarty Posted February 21, 2009 Share Posted February 21, 2009 IMHO more than just photons! did you ever notice that things with casimir geometry like Rayney nickel are great catalysts? So maybe catalytic reactions are not faster they just take a relativistic route opposite in nature to an event horizon such that reactants spend hours in an exclusion field only to return and find mere moments have passed in normal space. Quote:Scharnhorst has given a new twist to the Casimir effect by considering the velocity v of a photon travelling across the gap between the plates. If the plates are separated by a gap d, the Casimir effect suppresses all virtual photons with a wavelength of 2d or greater. Because these virtual photons are absent, they cannot participate in games of catch between virtual particles. Therefore a real photon travelling between the plates spends less time as an electron-positron pair because the QED vacuum fluctuations are suppressed. For this reason, the photon travels faster across the gap. Its speed of travel through normal vacuum is c, so its speed v in the negative energy vacuum between the plates is greater than c! Einstein's lightspeed barrier has been broached by a photon! Link to comment Share on other sites More sharing options...
GDG Posted February 27, 2009 Share Posted February 27, 2009 alright the Casimir is proven that light travels faster in an absence of matter faster than the universal constant of V so assume you have you have a three km long chamber encasing an electromagnetic field and you could accelerate an object to the speed of light then you removed the electromagnetic field and it broke the glass at this point it is traveling at more than the speed of light which is against the laws of physics because it wasn't always traveling faster than light would it dilate at an equal rate to its declaration or will it simply continue to move faster than light ? a.) AFAIK, the Scharnhorst effect applies only to photons, not matter (and in a Casimir gap, it is virtual particles that are excluded). Material objects are not absorbed by virtual particles and re-emitted, so we don't expect any velocity increase in a Casimir gap. b.) You are not going to be able to accelerate any material object to the speed of light in a 3 km conduit. Consider what kind of acceleration would be required Link to comment Share on other sites More sharing options...
swansont Posted February 28, 2009 Share Posted February 28, 2009 Discussion of how this might tie in with gravity moved here Link to comment Share on other sites More sharing options...
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