The Impact of the Argus Experiment on Hydromagnetic-Wave Research

The Argus series of high-altitude nuclear explosions has provided us with the means of studying hydromagnetic-wave effects under known and controllable conditions. These explosions have enabled us to compare, for the first time, quantitative experimental data with theoretical considerations. Analysis of the world-wide hydromagnetic-wave effects led to the discovery of an interesting duct-like mechanism for the propagation of hydromagnetic waves at altitudes between 2000 and 3000 km. This mechanism is essential for the efficient propagation of hydromagnetic waves over global distances.