A unit of measure used in acoustics. The same as CYCLES PER SECOND
            (CPS). Named after German physicist Heinrich Hertz (1857-1894), who
            expanded Clerk Maxwell's theory of the propogation of light to electro-magnetic
            and sound phenomena. In addtion to sound waves, his name became associated
            with measurments for radio and electronics -- hertz (Hz), kilohertz
            (KHz), megahertz (MHz). In 1933 the designation of HERTZ as a unit
            of measurment became part of the international metric system.
          See Frequency,
            Pitch and Intervlas from Dartmouth College, Music
            and Computers.