Definition Collimator

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A collimator is a device that narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam to become smaller (beam limiting device)

Description

Collimator is a device for producing a parallel beam of rays or radiation, that narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam to become smaller (beam limiting device)

Additional information

History

An English physicist Henry Kater was the inventor of the floating Collimator, which rendered a great service to practical astronomy. He reported about his invention in January 1825

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