Misznay-Schardin effect
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The Misznay-Schardin effect is a characteristic of the detonation of a broad sheet of explosive. The explosive blast expands directly away from (perpendicular to) the surface of an explosive. Unlike the blast from a rounded explosive charge, which expands in all directions, the blast produced by an explosive sheet expands primarily perpendicular to its plane, in both directions. If one side is backed by a heavy or fixed object, however, the majority of the blast (that is, most of the rapidly expanding gas and its kinetic energy) will be sent in the direction away from it.
This effect was studied and experimented with by explosive experts Misznay, a Hungarian, and Dr. Hubert Schardin, a German, who initially sought to develop a more effective anti-tank mine for Nazi Germany. World War II ended before their design became usable, but they and others continued their work. The British AT2 mine and the United States' Claymore mine rely on the Misznay-Schardin effect.
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