What does refractive index actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

Key Concepts Light Refraction Reflection Index of refraction Introduction If you pour water into a clear glass, what color is it? It's clear, right? But what happens if you try to look through it ...

However, actually making practical metamaterials has proven to be very difficult. In principle, it should be much easier to achieve negative refraction with electron waves in a semiconductor. For ...