33Now i think fogs in front of headlights are cleared.. [1]
this is about speed of light and relativity.. [1]
it is in reference to TargetIIT » Forum » Basic Foundation » this really is puzzling me
Speed of light : What is it.. It is one of the ultimate truth.. (at least today...11th Jan' 09 [3])
It is fixed no matter what U do...
Suppose you are moving with velocity 20m/s and measure speed of light it will be c only.. (not because c-20≈c but ...) If u are travelling with speed say 0.99c (don't ask me how.. [3])(not at v>c.. read on.. to know more about v>c) u will measure velocity of light as c only a fixed quantity..
now what is c : U may wonder .. such a universal truth changes by bare a change in medium.. so if it calculated in vacuum (which vacuum [7]) it is something u know 2.something something...
But u can travel light at speed greater than c....
if the vacuum energy(find what it is.. theres not enough space for mentioning everything...) is lowered light increases its speed..
for example in vacuum created by by bringing two perfectly smooth metal plates together at near atomic diameter spacing.
[3] here velocity of light increases by a veryyy small amount 10-30% (don't remember exactly )
Smells like time traveling... sending information back in time... sorry not that easy [3] many complexities.. (again restricting me )
for that relative velocities..
v is velocity in inertial frame [3]... w' is relative velocity wrt observer moving at velcity w...
Put v=c and see w' comes same as c ... thats why speed of light doesn't changes wrt observers... [1]
....contd
for traveling at speed greater than light.[3]
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8 Answers
33what if anything like information also travels with v>c.. it will cause result before the cause .
It paves way for another topic Causality (leaving here)
Travel faster than light
Alcubierre drive, A ship enclosed in a "warp bubble" where the space at the front of the bubble is rapidly contracting and the space at the back is rapidly expanding, with the result that the bubble can reach a distant destination much faster than a light beam moving outside the bubble.
Traversable wormhole, which could create a shortcut between arbitrarily distant points in space.
But here also are we traveling at speed greater than light
Travelers moving through the wormhole would not locally move faster than light which travels through the wormhole alongside them, but they would be able to reach their destination (and return to their starting location) faster than light traveling outside the wormhole.
It is like u take a highway and give light a rough village road and have a race with it [1]
should i continue with Tachyons and string theory [3] only 0 level though which i know and all that or is it enough [3]
by the way Tachyon are hypothetical particle that travels faster-than-light.
1parva nahin , lekin likne ko mat bhool jitna bhi ho , ek sentence per day kafi hai . ;)
1yaar i was thinking of writing something as a comment only :P.... wenenvr i get wid these terms .. warmholes n warping n light n time.... i feel like ..... hooooooooooooo......... restricting myself ;) i dun wanna spoil the beauty of ur article ... :) it is jus beautiful... !! :)
simply great :)