Prism glasses compensate for eye misalignment by redirecting the light rays to make the two images align. Prism glasses are measured and prescribed in prism diopters. The axis must also be ...

Once only a part of science fiction, lasers are now everyday objects used in research, health care and even just for fun.

For example, if a light ray hits a surface with an angle of incidence of 45°, ... It can be seen when white light is split by a prism, ...

In other words, a prism seems only to bend (refract) light, leaving it otherwise unaltered. But it does so to different degrees (that is, at different angles) for different colors.

A monochromator is a device that separates different wavelengths of light from a given light source. The main components typically include an entrance slit, mirrors and a light disperser. 3 A prism or ...