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Night vision devices (Qtbpt)

Definition
Optical devices permitting vision in almost total darkness by using photocathodes to intensify images in low ambient light. Early devices used infrared light sources. (Source: Team)
Broader Term
Optical devices (Qtbp)
Related Terms (Hierarchical)
Lasers (Qtbpm)
Lenses (Optics) (Qtbpp)
Mirrors (Qtbps)
Optical systems (Qtbpu)
Related Terms (Associative)
Night vision (Mxbvn)