An object that's intrinsically flat, say a piece of paper, can be shaped into a cylinder without stretching or tearing it. The same isn't true, however, for something intrinsically curved like a contact lens. When compressed between two flat surfaces or laid on water, curved objects will flatten, but with wrinkles that form as they buckle.
from General Physics News - Science News, Physics News, Physics, Material Sciences, Science https://ift.tt/jytvzMm
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