The magician's box was gimmicked with a wire that made it appear to open on its own.

The hulls are four-compartment vessels with thwartships framing, longitudinally braced, with continuous engineroom girders, egg-crated into transverse floors.

The central peaks of Rhean craters appear to be larger with respect to crater size than for lunar and Mercurian craters.

elliptic partial differential equation