# Could we travel faster than the speed of light in a medium, but slower than the speed of light in vacuum?

It is well accepted that nothing with mass can travel at the speed of light in vacuum, $c$. Now let's say that a light wave is traveling through a medium that slows the wave's speed significantly (less than $c$). Since we are able to accelerate objects to over 99% the speed of light (via LHC), could we potentially create a situation in which we could view a stationary light wave as Einstein first wondered during his childhood?