There are probably few areas of natural science outside of magnetohydrodynamics (MHD) and plasma physics where fundamental research touches so closely upon modern technological development. Since the classic work of Alfve´n, which received its impetus from astrophysics, the related problems of thermonuclear fusion, plasma propulsion, and MHD power generation have attracted some of the most able investigators in science and engineering. The effort already expended on these problems has been considerable and will without doubt be increased in the future. In recognition of the growing activity in these fields, the Basic Sciences Committee of the American Institute of Electrical Engineers organized the first meeting on the engineering aspects of magnetohydrodynamics at the University of Pennsylvania in 1960. Interest in the initial undertaking continued and a second conference was held in March 1961 at Philadelphia under the general chairmanship of Clifford Mannal (General Electric). With the advent of the third symposium, under the direction of N. W. Mather (Princeton), it is felt to be well on its way to becoming an annual gathering.