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Electromagnetic pulse: Difference between revisions
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{{Era|Forerunner|Covenant|Human|UNSC|HCW|Post}} | {{Era|Forerunner|Covenant|Human|UNSC|HCW|Post}} | ||
{{SeeWikipedia | {{SeeWikipedia}} | ||
[[File:HReach-T26BansheeGSA-EMP.jpg|250px|thumb|A Type-26 Banshee GSA when hit by the EMP effect of an overcharged [[plasma pistol]].]] | |||
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The worst of an electromagnetic pulse generally only lasts for a second, but any unprotected electrical equipment will be affected by the pulse. | An '''electromagnetic pulse''' ('''EMP''') is the electromagnetic radiation from an explosion (especially a [[nuclear weapon|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. While organic tissue is unaffected, the resulting electric and magnetic fields may couple with electrical/electronic 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. | ||
The worst of an electromagnetic pulse generally only lasts for a second, but any unprotected electrical equipment will be affected by the pulse.<ref>[[Wikipedia:Electromagnetic pulse|'''Wikipedia''': ''Electromagnetic pulse'']]</ref> | |||
==Notable examples== | ==Notable examples== | ||
There have been several noteworthy instances in which an EMP has appeared. | There have been several noteworthy instances in which an EMP has appeared. | ||
*The detonation of a [[nuclear weapon]], such as a [[Shiva-class nuclear missile]], is almost always followed by a massive electromagnetic pulse. | *The detonation of a [[nuclear weapon]], such as a [[Shiva-class nuclear missile]], is almost always followed by a massive electromagnetic pulse.<ref>'''[[Halo: The Cole Protocol]]''', ''page 317''</ref> | ||
*In the aftermath of [[Operation: UPPER CUT]], both [[SPARTAN-B312]] and the satellite [[Navigation Beacon RA-15]] witnessed a purple-tinted EMP cloud emanate from the wreckage of the [[Covenant supercarrier]] ''[[Long Night of Solace]]'' after the improvised slipspace bomb was activated. The cloud disabled all electronics within its vicinity, including the NAV Beacon. | *In the aftermath of [[Operation: UPPER CUT]], both [[SPARTAN-B312]] and the satellite [[Navigation Beacon RA-15]] witnessed a purple-tinted EMP cloud emanate from the wreckage of the [[Covenant supercarrier]] ''[[Long Night of Solace]]'' after the improvised slipspace bomb was activated. The cloud disabled all electronics within its vicinity, including the NAV Beacon.<ref>'''[[Halo: Reach]]''', campaign level, ''[[Long Night of Solace (level)|Long Night of Solace]]''</ref> | ||
*During the [[Battle of Installation 04]], [[Cortana]] diverted [[John-117]]'s [[energy shielding|energy shields]] into an EMP to disable [[Installation 04|Halo's]] [[phase pulse generator]]s.<ref>'''[[Halo: Combat Evolved]]''', campaign level ''[[Two Betrayals]]''</ref> | *During the [[Battle of Installation 04]], [[Cortana]] diverted [[John-117]]'s [[energy shielding|energy shields]] into an EMP to disable [[Installation 04|Halo's]] [[phase pulse generator]]s.<ref>'''[[Halo: Combat Evolved]]''', campaign level ''[[Two Betrayals]]''</ref> | ||
*The [[deep-space artifact]] let out an enormous electromagnetic pulse that briefly canceled out all communications in the [[Sol system]]. It later let out another pulse upon deactivation. | *The [[deep-space artifact]] let out an enormous electromagnetic pulse that briefly canceled out all communications in the [[Sol system]]. It later let out another pulse upon deactivation. | ||
*During the [[Skirmish over Threshold]], [[John-117]] used the EMP emitted by a [[Type-1 | *During the [[Skirmish over Threshold]], [[John-117]] used the EMP emitted by a [[Type-1 plasma grenade]] to disable the electronics of a locked door on ''[[Ascendant Justice]]'', which allowed him to open the door.<ref>'''[[Halo: First Strike]]''', ''page 89''</ref> | ||
*The in-atmosphere jumping of the ''[[Solemn Penance]]'' to [[Slipstream space|slipspace]] above [[New Mombasa]] created a massive electromagnetic pulse that damaged electrical systems in the city, and fried the navigational and safety systems of nearly five dozen [[Single Occupant Exoatmospheric Insertion Vehicle|SOEIV]] pods unfortunate enough to drop into the city at that exact moment, plunging them and the [[Orbital Drop Shock Trooper]]s inside free-falling to near-certain death.<ref>'''[[Halo 3: ODST]]''', campaign level ''[[Prepare to Drop]]''</ref> | *The in-atmosphere jumping of the ''[[Solemn Penance]]'' to [[Slipstream space|slipspace]] above [[New Mombasa]] created a massive electromagnetic pulse that damaged electrical systems in the city, and fried the navigational and safety systems of nearly five dozen [[Single Occupant Exoatmospheric Insertion Vehicle|SOEIV]] pods unfortunate enough to drop into the city at that exact moment, plunging them and the [[Orbital Drop Shock Trooper]]s inside free-falling to near-certain death.<ref>'''[[Halo 3: ODST]]''', campaign level, ''[[Prepare to Drop]]''</ref> | ||
*The {{UNSCShip|Port Stanley}} was equipped with an [[Electromagnetic pulse cannon|EMP cannon]], for disabling ships not hardened against it, which it used against the {{Class|Hudal|auxiliary vessel}} ''[[Piety]]''.<ref>'''[[Halo: Glasslands]]''', ''page 224''</ref> | *The {{UNSCShip|Port Stanley}} was equipped with an [[Electromagnetic pulse cannon|EMP cannon]], for disabling ships not hardened against it, which it used against the {{Class|Hudal|auxiliary vessel}} ''[[Piety]]''.<ref>'''[[Halo: Glasslands]]''', ''page 224''</ref> | ||
*While trying to stop the [[Ur-Didact|Didact]], [[Cortana]] again modified the Master Chief's shields to give off an EMP to disable a carrier wave generator. She referred to it as "taking a page out of our old playbook." | *While trying to stop the [[Ur-Didact|Didact]], [[Cortana]] again modified the Master Chief's shields to give off an EMP to disable a carrier wave generator. She referred to it as "taking a page out of our old playbook."<ref>'''[[Halo 4]]''', campaign level, ''[[Shutdown]]''</ref> | ||
===Gameplay=== | ===Gameplay=== | ||
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File:Armor_Lock_EMP_Pulse.jpg|An EMP wave from the Armor Lock ability can disrupt nearby enemy shields. | File:Armor_Lock_EMP_Pulse.jpg|An EMP wave from the Armor Lock ability can disrupt nearby enemy shields. | ||
File:Plasma_EMP_Wraith.jpg|The [[Type-25 Directed Energy Pistol|Plasma Pistol]]'s AOE secondary charge function emits an EMP burst to deactivate a Covenant [[Type-26 Assault Gun Carriage|Wraith]] tank for a short period of time. | File:Plasma_EMP_Wraith.jpg|The [[Type-25 Directed Energy Pistol|Plasma Pistol]]'s AOE secondary charge function emits an EMP burst to deactivate a Covenant [[Type-26 Assault Gun Carriage|Wraith]] tank for a short period of time. | ||
File: | File:1249522072-Snap28.png|The [[EMP Kill Medal]] given to a player in ''[[Halo 3: ODST]]'' and in ''[[Halo 3]]'' when killing an enemy shortly after their shields are deactivated. | ||
</gallery> | </gallery> | ||