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the shared mass isolating volume and density as the distinguishing variables across metals and polymers
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Plano-Cylindrical Concave Lens, +17 Diopter, 50 x 50mm Science at Home_Life Science the shared mass isolating volumePlano cylindrical lens at 50 by 50mm with 17 diopter optical power and ground polished edges, the cylindrical curvature focusing light to a line rather than a point in optics demos.
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