THE VALUE OF THE CRITICAL ANGLE DEPENDS ON THE REFRACTIVE INDEX
- A dense material with a high refractive index has a low critical angle.
- If a material has a high refractive index it will totally internally reflect more light.
Endoscopes
An endoscope is a thin tube containing optical fibres that let surgeons see inside the body. Endoscops carry two bundles of optical fibres, one to light the part of the persons body and another to carry the image back to the surgeon. The advantage of then is that surgeons are able to perform keyhole surgery.
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