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A light tube is used for transporting natural or artificial light for illumination.
Light tube or light pipe may also refer to:
Waveguide (optics), a device for light transport in photonic devices
Fluorescent lamp, a tubular light-emitting device
In professional wrestling, "light tube" refers to a fluorescent lamp used as a weapon in certain hardcore matches.
ADAT Lightpipe, a protocol for digital audio signals
Krause-Ogle box, a waveguide (light pipe) used in nuclear testing
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