A shaped charge is a device capable of focusing the energy of an explosion in one point, this makes it capable of piercing many inches of steel.
This kind of explosive charge was first used in the second world war as a anti-tank weapon.
The effect that describes the focusing of the explosion's energy by a hollow or void cut was discovered by Mr Edward E. Munroe.
In this video you can learn more about explosions, shaped charges, the Munroe effect, shock waves and waves.
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