Photonics Dictionary: P

A wave of radiant energy in which each point of the wave is repeatedly displaced at equal time intervals.

An instrument used to detect and measure radiant energy by the formation of a chemical reaction.

The transformation of incident radiant energy into a photoelectric emission current.

A system that consists of a spectrophotometer with a photoelectric detector for measurement of radiant energy.

The use of photographic recording equipment to measure radiant energy. With this procedure, many measurements of radiant energy can be recorded simultaneously and permanently.

The property exhibited by a substance having electrical conductivity that decreases as the intensity of the incident visible radiant energy increases.

The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and...

Participates in a reaction only in the presence of light and radiant energy. Besides 3D printing, photoreactive agents also have an application in light therapy. By absorbing light, photoreactive...

A device used to detect radiant energy by means of the thermal expansion of gas.

The measurement of the rotation of the plane of polarization of radiant energy, usually through the use of a polarimeter.