Assertion: lens | /r/HasProperty | plano-concave
Facets:
Source sentences:
text: If the lens is biconcave or plano-concave, a collimated beam of light passing through the lens is diverged (spread); the lens is thus called a negative or diverging lens.
text: If one of the surfaces is flat, the lens is plano-convex (or plano-concave depending on the curvature of the other surface).
text: If the lens is biconcave or plano-concave, a collimated beam of light passing through the lens is diverged (spread); the lens is thus called a negative or diverging lens.