This volume contains the proceedings of the Second Conference on the Exploding Wire Phenomenon. In addition to the general theory of exploding wires, this conference considered exploding wire shock waves; the generation by exploding wires of extreme tem­ peratures, X-rays, and very high pressures; instrumentationprob­ lems in wire explosions; and, for the first time, exploding foils. Sponsored by the Geophysics Research Directorate ofthe Air Force Cambridge Research Laboratories, this symposium was held in Boston, Massachusetts, on November 13 and 14, 1961. To fill a definite need for ready access to information, Volume Two of Exploding Wires contains a comprehensive index which should facilitate the use of both volumes on the exploding wire phenomenon. It is not possible to express full appreciation to all those whose generous assistance made the Second Conference and this volume possible. It is certain, however, that without the cooperation of Dr. John N. Howard, Laboratory Chief, and Mr. Morton A. Levine, Branch Chief, there could have been no conference. Special ac­ knowledgment goes to the Staff of the Hydromagnetics Laboratory for its invaluable aid: to Mrs. William Watson for exceptional secretarial work; to Mr. E. H. Cullington for technical assistance; to Mr. C. V. Fish for drawings, graphs, and art work; and to Mr. K. R. Saari for photography. Particular gratitude is due to Mr.

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General Papers.- Factors Affecting the Time to Burst in Exploding Wires.- Recent Contributions to the Macroscopic Analysis of Conducting Electromechanical Solids.- A Hydrodynamic Explanation for the Anomalous Resistance of Exploding Wires.- Lower-Upper Bounds of Temperatures for Wires Exploded in a Vacuum.- The Electrical and Optical Properties of Rapidly Exploded Wires.- About Distances in the "Characteristic Pattern" of Exploding Wires.- Exploding Wires as a Source of X Rays.- Calorimetric Calibration of the Electrical Energy Measurement in an Exploding Wire Experiment.- Effects of Transmission Lines in Applications of Exploding Wires.- Shock Waves.- Microwave Doppler Measurements of the Ionization Front in Cylindrical Shock Waves from Exploding Wires.- Electrical Generation of Imploding Shock Waves.- Blast Waves Produced by Exploding Wires.- Exploding-Wire-Driven Shock Waves.- Shock Waves from Exploding Wires at Low Ambient Densities.- Applications.- The Use of Exploding Wires in the Study of Small-Scale Underwater Explosions.- Studies of Metal-Water Reactions by the Exploding Wire Technique.- Pressure Environments Created by Wires Exploded in Water.- An Exploding Wire Hypervelocity Projector.- Exploding Foils.- High-Speed Cinemicrographic Studies of Electrically Exploded Metal Films.- Exploding Foils-The Production of Plane Shock Waves and the Acceleration of Thin Plates.- Acceleration of Thin Plates by Exploding Foil Techniques.- Aerosols from Exploding Wires.- Author Index for Volumes 1 and 2.- Subject Index for Volumes 1 and 2.