1. CHARLES R. BUFFLER, Ph.D., is a staff scientist with Custom Materials, Inc., Chelmsford, Mass. A graduate of the University of Texas, he received his M.S. and Ph.D. degrees in engineering and applied physics at Harvard University, and worked under Profs. C. L. Hogan and R. J. Jones on the microwave properties of magnetic nonconducting materials. Since that time, he has been involved in many research programs, including studies of the breakdown of arcing mechanisms in microwave devices—mechanisms...