ConcaveConcave means curving inward. eg. Concave mirror, Concave me... More means curving inward.
eg. ConcaveConcave means curving inward. eg. Concave mirror, Concave me... More mirror, ConcaveConcave means curving inward. eg. Concave mirror, Concave me... More meniscusMeniscus is the curved upper surface of a non-turbulent liqu... More
