What are binoculars?
Binoculars are generally handheld optical instruments that permit a magnified, stereoscopic view of objects in the distance. They include two telescopes of the same type, put together on a single frame. A single thumbwheel can be used to adjust the focus of both telescopes at the same time, and there may also be the possibility of adjusting the focus of each telescope separately to take into account any differences in the two eyes. Binoculars are designed to illustrate an upright view that has a correct left-to-right orientation. As they enable the use of both eyes in a natural way, they are more comfortable than single telescopes, they provide depth perception and can enhance visual acuity by providing the human visual system with two sets of data to process and combine.
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