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Author Topic: Does light travel infinite distance ? How light gets energy to travel with c?  (Read 3530 times)

ScientificBoysClub

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Does light travel infinite distance ? How light gets energy to travel with c?

Well.... How light can travel with constant velocity 299 792 458 m / s  ....... what is making it to travel with that velocity ??

And Does any particle travels faster then velocity of light ?


 

Offline Vern

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Light travels at c because it naturally behaves in accord with Maxwell's equations; these operate with the electric permittivity and magnetic permeability of space and produce a wave that must move through space at the speed of light.


Nothing moves faster than light. There are cases where entangled photons and maybe particles seem to sense each other's state faster than light; we don't yet know just exactly what is happening in this case.
« Last Edit: 06/02/2009 14:25:16 by Vern »
 

ScientificBoysClub

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Light travels at c because it naturally behaves in accord with Maxwell's equations; these operate with the electric permittivity and magnetic permeability of space and produce a wave that must move through space at the speed of light.


Nothing moves faster than light. There are cases where entangled photons and maybe particles seem to sense each other's state faster than light; we don't yet know just exactly what is happening in this case.
is it possible to change  electric permittivity and magnetic permeability of space and time if we can make space and time unstable ??? ...if its possible can we increase the light speed ?
 

Offline Vern

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You can't change it in space; there are substances in which it is different than in a vacuum; this can cause light to move more slowly through certain media. There's no way that I know about that you can do better than a perfect vacuum. I think we're stuck with the speed of c.
 

Offline lightarrow

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Someone conjectures that inside two very near metal plates, when Casimir effect takes place, light could travel faster than c because the energy density (and/o charged virtual particles density) there is lower than in the void, so electric permittivity would be less than ε0, or there is less photon scattering with virtual particles. Just speculations however, I don't know anything than this.
http://arxiv.org/ftp/physics/papers/9911/9911062.pdf
http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/FTL.html
http://www.daviddarling.info/encyclopedia/C/Casimir.html
http://en.wikipedia.org/wiki/Faster-than-light
« Last Edit: 06/02/2009 17:07:55 by lightarrow »
 

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