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What is the physics behind the fiber optics in endoscopy how does it function?
Kagang
In fiber optics something called total internal reflection occurs... this is where light enters the the glass tube and bounces along the inside. For this to happen there needs to be a coating of a material surrounding the glass fiber which is less dense than the fiber itself. The light has to hit the surface on the inside at a large enough angle for total internal reflection to occur, otherwise the light will leave the fiber. Because of this, the fibers can't bend beyond a certain point. In endoscopy fiber optics are used to direct light from a source into the area of the patients body that's being examined and also as a means of transmitting the image back up to the observer.
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∙ 13y ago
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