photoelectric multiplier meaning

• [Electronics]
  A device that internally amplifies the current resulting from bombardment by infrared, visible light, or ultraviolet radiation. A PHOTOMULTIPLIER TUBE is an example of such a device.
  

• photoelectric:    Adjective: photoel ...
• multiplier:    Noun: multiplier&n ...
• photoelectric alarm:    [Electronics]An al ...

Examples

1. Commands from the Earth were then given to move the film into a flying spot scanner where a spot produced by a cathode ray tube was projected through the film onto a photoelectric multiplier.