Pressure 03 : General. Force acting on a unit area of surface and at right angles to the surface, for example, pressure by a fluid on the walls of a containing vessel. It is commonly measured in bars and millibars, and newtons per sq. m
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}