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total internal reflection

British  

noun

  1. physics the complete reflection of a light ray at the boundary of two media, when the ray is in the medium with greater refractive index

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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This is analogous to so-called total internal reflection of light rays.

From Scientific American Oct. 12, 2023

The same phenomenon of “broken” total internal reflection, but with light rays instead of water waves, is used in certain types of touch screen displays.

From Scientific American Oct. 12, 2023

Suppose you are using total internal reflection to make an efficient corner reflector.

From Textbooks Aug. 12, 2015

Figure 25.54 A light ray inside a liquid strikes the surface at the critical angle and undergoes total internal reflection.

From Textbooks Aug. 12, 2015

I will place my lenses there at the chink through which you were gazing and bring the image down into my camera obscura by a prism arranged for total internal reflection.

From The Darrow Enigma by Severy, Melvin Linwood

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