Plano-convex may refer to:
*
Plano-convex lens, in optics
* Plano-convex, a type of
mudbrick
A mudbrick or mud-brick is an air-dried brick, made of a mixture of loam, mud, sand and water mixed with a binding material such as rice husks or straw. Mudbricks are known from 9000 BCE, though since 4000 BCE, bricks have also bee ...
used by the ancient Sumerians
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