BALL n.
the end of a lever. -- Ball gudgeon, a pivot of a spherical form, which permits lateral deflection of the arbor or shaft, while retaining the pivot in its socket. Knight. -- Ball lever, the lever used in a ball cock. -- Ball of the eye, the eye itself, as distinguished from its lids and socket; -- formerly, the pup…
BETA RAYS n.
Penetrating rays readily deflected by a magnetic or electric field, emitted by radioactive substances, as radium. They consist of negatively charged particles or electrons, apparently the same in kind as those of the cathode rays, but having much higher velocities (about 35,000 to 180,000 miles per second).…
BRIDGE n.
A low wall or vertical partition in the fire chamber of a furnace, for deflecting flame, etc.; -- usually called a bridge wall. Aqueduct bridge. See Aqueduct. -- Asses' bridge, Bascule bridge, Bateau bridge. See under Ass, Bascule, Bateau. -- Bridge of a steamer (Naut.), a narrow platform across the deck, above the r…