6 ms·
I wonder if there could be something other than vacuum, in which light would travel faster.
by HPsquared 5d ago
I wonder if there could be something other than vacuum, in which light would travel faster.
- anon48293 5d agoKind of, with trickery. https://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/FTL.html https://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLig...
- ttyyzz 5d agoProbably not, to get light to move faster, you don't need a new medium - you just need less of the universe getting in its way.
- aidenn0 5d agoTechnically, no. However there are metamaterials in which certain wavelengths exhibit a negative index of refraction, which cause light to behave in some ways similarly to if it were moving faster. https://en.wikipedia.org/wiki/Negative-index_metamaterial https://en.wikipedia.org/wiki/Negative-index_metamaterial