Fiber optic

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Eureka Squeeze a silicon squeeze sucker.

Mixed used : Light saturation, LED Potholes and Video projection & Extruded+Printed backwall Custom Round LED Screen Perspective of the Beatle

(eBay) 5 Dental Fiber Optic Large turbine Handpiece fit 6H Quick Coupling Yabangba

(eBay) 5 Dental Fiber Optic LED handpiece Large Torque Coupler 6H 6Pin Coupling Coupler

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lighting on the wall details lighting variation

fiber optics light glove | designboom.com

This is a pretty neat way to glow up. Light in the fiber optic cable zooms through the core by constantly bouncing off of the edge of the molded plastic, a principle called "total internal reflection" (which also kinda sounds like a very expensive meditation island retreat). When the light pipe doesn't have total reflection, you can get a nifty lighting effect from the light illuminating the plastic tubing.