Aconvex lens is (a)thicker in the middle than on the edges (b)varying in thickness from edges to middle (c)thicker on the edges than in the middle (d)equally thick from middle to edges

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Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Answer/// he concludes that the atom particles can be broken due to the paddle wheel being moved by particles coming out of the metal;