Abstract: An electrical terminal having an insulating seal structure is disclosed which terminal is particularly adapted for use in high energy batteries. The fabrication of the seal structure by sealing two metallic members between two annular ceramic members is described. Design considerations are disclosed which enable the seal structure to be simply and inexpensively fabricated and yet withstand adverse environmental and mechanical conditions.

Abstract: A process for polishing surfaces of sapphire or similar materials to remove surface imperfections visible at magnifications of 1,000X or higher regardless of the shape of the surface, is disclosed, which process comprises the steps of heating the material to an elevated temperature and exposing the surface to be polished to a static hydrogen environment.

Abstract: A light source lamp apparatus having a lamp housing envelope with a circular opening and an electrode assembly disposed and sealed within the interior of the envelope about said opening. The electrode assembly includes an electrode support shaft with an electrode mounted about one end and a cylindrical shoulder intermediate the electrode and the other end; a compression ring coaxial with the shaft and positioned in tandem with the shouler to form a seat for receiving an elastometer O-ring intermediate the compression ring and the shoulder; an elastometer O-ring positioned within said seat; pressure control means coupled to said compression ring for compressing the seat and expanding the outer diameter of the O-ring to cause the outer peripheral surface of said O-ring to interface with the interior surface of the envelope and seal said envelope and said O-ring.