Abstract: Stabilized or partially stabilized zirconia paste may be screen printed onto hydrophilic plastic film in the form of a mesh. On firing, this becomes a very sharp foil for electric razors with excellent wear and flexibility characteristics. Stabilized or partially stabilized zirconia may also be screen printed onto a wettable plastic film then fired to produce low cost razor blades with an excellent edge. A curved razor blade incorporating an array of holes, each of which has a knife edge periphery, offers greater cutting power and control of the skin surface than a single or double edge.

Abstract: The X-ray laser exploits the violent collapse of a bubble (11) in liquid (9) to produce an intense concentration of energy, as a piston (1) is compressed violently into a cylinder (2). X-rays from this source are used to produce a population inversion within the bubble wall. This can then give rise to X-ray laser emission approximately parallel to the bubble wall, through a window (12).