Comment by kelnos
3 years ago
> Hollow core fibers for instance allow light to move one third faster.
Could you expand on this? The speed of light is constant, no?
3 years ago
> Hollow core fibers for instance allow light to move one third faster.
Could you expand on this? The speed of light is constant, no?
In vacuum. In glass it’s significantly lower. Air core fibre brings it back up to about 99% or thereabouts…