Wikipedia There is more information available on this subject at Electromagnetic pulse on the English Wikipedia.

The EMP medal awarded to a player in Halo 3 and Halo 3: ODST after killing an enemy shortly after its shields were depleted by an EMP.

An electromagnetic pulse (EMP) is the electromagnetic radiation from an explosion (especially a nuclear explosion) or an intensely fluctuating magnetic field caused by Compton-recoil electrons and photoelectrons from photons scattered in the materials of the electronic or explosive device or in a surrounding medium. The resulting electric and magnetic fields may couple with electrical systems to produce damaging current and voltage surges. The effects are usually not noticeable beyond the blast radius unless the device is nuclear or specifically designed to produce an electromagnetic shockwave. An alternate definition is: a broadband, high-intensity, short-duration burst of electromagnetic energy.


EMP is mentioned several times in the Halo universe:




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