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 to see the world on the other side of the glass? It looks a ...

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

Light bends when travelling through a concentration gradient of sugar in water. The top layer of liquid is pure water while the bottom layer is concentrated sugar water. In these layers, there is no ...

Among the various sensing modalities available for bioprocess operations, index of refraction (IoR) is intriguing for its simplicity and capability for sample-less, real-time readout. A group led ...

Metamaterials are artificially engineered structures that can have properties, such as negative refractive index, not attainable with naturally occurring materials. The first demonstrations of ...