Photonics Dictionary: P

A photodetector, also known as a photosensor or photodiode, is a device that detects and converts light into an electrical signal. Photodetectors are widely used in various applications, ranging from...

The measurement and analysis of color using a photoelectric instrument having three filters with broad spectrum bands.

The control of an instrument or electrical circuit by the current produced by varying radiation incident to a photoelectric cell.

The electron emission from a substance or instrument whose surface has been bombarded by a suitable amount of radiation.

An instrument used to measure the temperature of a source through the use of photoelectric cells to detect and measure the intensity of the light emitted by the source.

An instrument that uses a photocell to detect and measure the intensity of incident light.

A photomultiplier tube (PMT) is a highly sensitive vacuum tube that detects and amplifies low levels of light. It is widely used in various applications where high sensitivity, fast response times,...