Inside View Headquarters very serious mistake paragraph completely destroys meaning what said end first paragraph second column page two says velocity part mechanical systems almost constant impedance conducting medium ear . use word ear instead air should have said renders paragraph misleading 184 Model Aviation emy Model Aeronautics 5151 East Memorial Drive Muncie IN 47302 September 1996 Sound Model Aeronautics column contained error detected Julio Q uevedo Officer columns will return next month