One-way mirror
Glass that allows people on one side to see those on the other but not vice versa / From Wikipedia, the free encyclopedia
A one-way mirror, also called two-way mirror[1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other. The perception of one-way transmission is achieved when one side of the mirror is brightly lit and the other side is dark. This allows viewing from the darkened side but not vice versa.
"Two-way mirror" redirects here. For the Crystal Antlers album, see Two-Way Mirror. For the Gabbie Hanna EP, see 2WayMirror.