Le 21/10/2015 17:00, scott a écrit :
>>> How does the theory deal with the light potentially having to go faster
>>> than the speed of light (for example when the photons are aimed straight
>>> at the centre of a massive object from afar)? If light always goes at
>>> "c" relative to the local space, and the space is getting distorted,
>>> this would appear to make the light go faster than "c" no?

presence of mass do not shorten the "distance". rather the opposite.

Think of it like liquid static water. presence of mass is adding jelly. 
Now swim your way... it might be faster to go around the jelly than 
going through it... even if the road would be pi/2 longer, at least for 
some dense jelly spots.

btw, there is known experiment about travelling faster than light in a 
medium (is that local space ?): it is possible, and it results in 
Cherenkov radiation.

the void has the ior of 1, to go faster than light in void, you just 
need to find "something" with an ior less than 1. The problem is 
"just"... is there such white crow ?

>>
>> No, it would just reduce the distance the light needs to go.
>>
>> (Also, mass tampers not only with space but also with time.)
>
> Just when you think you understand it! I thought I just had a vague
> recollection of once reading a proposal for faster-than-light travel,
> whereby space was distorted infront of and behind the object moving in a
> certain way. But maybe it was Asimov that wrote it :-)
>
Might be tied to Roddenberry. You do not violate the rules of the speed 
light limit in the fabric of the universe when you warp the fabric 
instead of moving.

the saga ends with warp travel being limited due to the breaking of the 
fabric caused by all the warping.

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