Wave Velocity and Refractive Index The speed of light (c) is a crucial factor in the wavelength formula, often represented as c = λ x f. The refractive index of a medium, denoted by n, also affects ...

For Higher Physics, revise how to calculate the expected direction of refracted rays using Snell’s law. Calculate critical angle given refractive index.

Following recent breakthroughs, researchers are laying the groundwork for a “perfect lens” that can resolve sub-wavelength features in real time, as well as a suite of other optical ...

Electromagnetic metamaterials with zero-refractive index for sub-wavelength photonics (Nanowerk News) Materials scientists can produce sub-wavelength artificial structures (split rings, honeycomb ...

Metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. However, there is no way to implement these materials on a photonic chip ...

Multilayer anti-reflection (MAR) coatings, by contrast, are presented as able to overcome the typical limitations of single-layer coatings, as they have a high and low refractive index, which ...

A type of mirror that reflects light with a specific wavelength composed of layers of high-refractive-index material and low-refractive-index material alternately laminated in the order of light ...

In use, gratings within the sensor are designed only to reflect the same wavelength when a liquid of a particular refractive index is in contact with the exposed grating. Being on the same substrate, ...