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A negative cylinder is a geometric shape that resembles a cylinder but has a concave profile, meaning it curves inward rather than outward. In technical contexts, such as in engineering or materials science, it can refer to specific designs or structures that have a negative curvature. This term can also appear in discussions about optics, where negative cylindrical lenses might be used to diverge light rather than converge it. Overall, the concept is characterized by its inward curve, contrasting with the traditional, outward-bulging cylinder.

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2mo ago

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