Ben Bartlett created an array of hexagonal mirrors that can reflect the sun's rays in any pattern and can be created by 3D printing. This 3D-printable hexagonal mirror array was created to apply for ...
A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...
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