The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in ...

The reason is that, on account of the different refractive indices of the two liquids which are compared, there will be different amounts of refraction of the scattered light as it emerges from ...

This is called refraction. The frequency of light does not change as it refracts. The refractive index of a material is a measure of the change in the speed of light as it passes from a vacuum (or ...

A research group has developed SPACIER, an advanced polymer material design tool that integrates machine learning with ...

Refractive lens exchange is becoming more popular as lens technology progresses, according to a speaker at Hawaiian Eye 2025.

When you use DPReview links to buy products, the site may earn a commission. OM System has announced the the M.Zuiko Digital ...

We can also use wavelengths to calculate refractive index. By substituting \(v_{1}=f\lambda _{1}\) and \(v_{2}=f\lambda _{2}\) into \(n=\frac{v_{1}}{v_{2}}\) then ...

The top layer of liquid is pure water while the bottom layer is concentrated sugar water. In these layers, there is no change in refractive index and no bending of light. In the middle, a gradient ...

The following is a summary of “Refractive Accuracy of a Novel Swept-Source OCT in Patients With Short and Long Eyes,” published in the January 2025 issue of Ophthalmology by Rementería-Capelo et al. R ...

Goertek Optics Technology Co. ('Goeroptics'), a subsidiary of Goertek, has unveiled its latest full-color augmented reality (AR) etching waveguide module, Star G-E1, and its proprietary DLP (Digital ...