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 ...

Using a standardized “index of error” may give clinicians a more accurate means of evaluating the outcomes of refractive surgery, a team of physicians in Finland suggests. Inaccuracies ...

The speed of light is determined by the medium (material) through which the light is travelling. Light travels faster in a vacuum than it does in any other medium. Light changes speed as it passes ...

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

Dr. Preussner said calculations with the Okulix formula employ several precise measurements: ray tracing of the pseudophakic eye; objective IOL data including radii, thickness and refractive index ...

We present experimental scattering data at microwave frequencies on a structured metamaterial that exhibits a frequency band where the effective index of refraction (n) is negative. The material ...

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 ...