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Light and optics

Reference
Symbol
Name
Definition
Note
IEC 60878 5012
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Lamp; lighting; illumination
To identify switches which control light sources, e.g. room lighting, lamp of a film projector, dial illumination of a device
IEC 60878 5383
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Indication of radiation field center by light
To identify controls for indication of the center of the radiation field by light.

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