reflect
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TIL about the medical procedure called Osteo-odonto-keratoprosthesis. It involves sewing a tooth onto a blind person’s eyeball. Doctors use the patient’s own tooth and drill a hole and plastic lens is fixed inside. The lens reflect light onto the back of the eye just the lens of a healthy cornea.
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whatilearned
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TIL Most of the time, it is perfectly safe to run the microwave with a metal spoon in it since it has rounded edges. It turns out that it’s the shape of the implement that matters. Cutlery with pointed edges can reflect the electromagnetic waves back and forth, often resulting in arcing (sparks)
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whatilearned
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