Technology
Endoscopes use fiber optics to light up human insides
HERE’S THE INTERESTING PART
Looking inside a stomach is impossible without light, and you cannot exactly swallow a flashlight. Endoscopes solve this by shoving a flexible bundle of microscopic glass fibers down your throat. These fibers perfectly bounce light internally all the way down without losing intensity, illuminating your digestive tract so the doctor can take heavily invasive, high-definition internal photography.
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