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Electromagnetic pulse: Difference between revisions

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*During the [[Skirmish over Threshold]], [[John-117]] used the EMP emitted by a [[Type-1 plasma grenade|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>
*During the [[Skirmish over Threshold]], [[John-117]] used the EMP emitted by a [[Type-1 plasma grenade|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 [[Operation: BUMRUSH|drop]] towards the carrier 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 [[Operation: BUMRUSH|drop]] towards the carrier 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 [[XEV9-Matos Nonlinear 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."<ref>'''[[Halo 4]]''', campaign level ''[[Shutdown]]''</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."<ref>'''[[Halo 4]]''', campaign level ''[[Shutdown]]''</ref>
*During the [[Carrow Conflict]], Governor [[Ellis Gass]] and her engineers created a makeshift EMP canon using the core of a [[HAVOK tactical nuclear weapon]] and an [[M68 Gauss cannon]] to [[Battle of the Sharquoi Hive|use]] against [[Jiralhanae Chieftain]] [[Hekabe]] and the ''[[vertex]]'', the [[Forerunner]] device that allowed him to control the [[Sharquoi]]. The EMP temporarily knocked out all of the Forerunner technology in the Sharquoi hive, although it quickly rebooted. This allowed Ellis time to remove the ''vertex'' from Hekabe and end his control over the Sharquoi.{{Ref/Novel|Env}}
*During the [[Carrow Conflict]], Governor [[Ellis Gass]] and her engineers created a makeshift EMP canon using the core of a [[HAVOK tactical nuclear weapon]] and an [[M68 Gauss cannon]] to [[Battle of the Sharquoi Hive|use]] against [[Jiralhanae Chieftain]] [[Hekabe]] and the ''[[vertex]]'', the [[Forerunner]] device that allowed him to control the [[Sharquoi]]. The EMP temporarily knocked out all of the Forerunner technology in the Sharquoi hive, although it quickly rebooted. This allowed Ellis time to remove the ''vertex'' from Hekabe and end his control over the Sharquoi.{{Ref/Novel|Env}}

Revision as of 18:17, April 10, 2022

Wikipedia.png
 There is more information available on this subject at Electromagnetic pulse on the English Wikipedia.
A Type-26B Banshee GSA when hit by the EMP effect of an overcharged Type-25 plasma pistol.

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. 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.[1]

Notable examples

There have been several noteworthy instances in which an EMP has appeared.

Silver Timeline

  • The UNSC used an EMP to disable Condor 325 after John-117 went rogue.[19]
  • The Madrigal Forerunner artifact appeared to release an EMP after John activated it, disabling the power to all electronic devices around the ship while it simultaneously restored power to the Condor despite the earlier EMP knocking it out. The UNSC base quickly restored power by switching to auxiliary generators, but it allowed the Condor the chance to escape.[19]

Gameplay

EMP is also an in-game effect in the Halo games, that disables energy shields and vehicles. It is produced by certain weapons and equipment.

  • In Halo 2, the Sentinels sometimes emit an EMP when destroyed. This effect disables shields, but vehicles are unaffected.
  • In Halo 3, the power drain uses EMP to disable shields, vehicles and other power sources.
  • The overcharged blast from a Type-25 and Type-54 plasma pistol will temporarily disable vehicles and energy shields.
  • In Halo Wars, Professor Anders' vehicle, the Gremlin, uses an EMP cannon as its main armament to disable enemy ground vehicles. It is vital in the level Shield World, temporarily disabling Forerunner pylons to buy the player time to complete their mission.
  • In Halo Wars, the Vampire's stasis cannon uses EMP as well to drain power from enemy aircraft.
  • In Halo: Reach, armor lock can trigger an EMP after use, which can take out a Spartan's shields. Combined with a quick and accurate melee, this can result in an almost instant kill.
  • In Halo: Reach the M319 grenade launcher has a secondary function that acts like an EMP. It awards a player an EMP Blast Medal when it kills an enemy, being the only other weapon in the game that awards the medal.
  • In Halo 2: Anniversary the bases on the map Bloodline have consoles that allow players to activate an EMP around the area. This can be made in a Forge map too.
  • In Halo 5: Guardians the Echidna can EMP targets.
  • In Halo 5: Guardians Hannibal Mantis can EMP targets with its stomp attack.
  • In Halo Wars 2 Spirit of Fire's MAC has been upgraded with EMP capabilities to disable Sentinel defenses at the Forerunner Conduits near the Cartographer and also outside of the Map Room itself. The EMP is the only in-game weapon that can defeat the Sentinel Swarms and was created by Professor Ellen Anders and Isabel. In-game this is referred to as the EMP MAC. After initially being fired under Isabel's control, it becomes a Leader power for its subsequent uses.
  • In Halo: Spartan Assault, an EMP Blast stuns all ally and enemy units around the EMP radius.
  • In Halo: Spartan Strike, throwing an EMP Grenade will cause the enemies to be stunned, rendering them unable to attack or move temporarily.
  • In Halo Infinite, overcharged blasts from Plasma Pistols will no longer EMP vehicles. Instead, this function has been given to Shock weapons such as the Disruptor and Shock rifle upon sustained fire.

Trivia

  • If you disable a vehicle using an EMP, it will show an animation of some sparks flying around, but if you disable it again before it is drivable then the animation will stop and the vehicle will not work.
  • Some vehicles disabled by an EMP will still have full functionality of its weapons if it has any. For example, if an M12 Warthog is disabled by an EMP, the turret will still be able to turn around and shoot. Likewise, a Type-26 Banshee, while grounded, will still be able to boost and perform tricks.

Gallery

  • The Type-25 plasma pistol's AOE secondary charge function emits an EMP burst to deactivate a Covenant Type-26 Wraith tank for a short period of time in Halo 3: ODST.

    The Type-25 plasma pistol's AOE secondary charge function emits an EMP burst to deactivate a Covenant Type-26 Wraith tank for a short period of time in Halo 3: ODST.

  • 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.

    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.

  • An EMP from a Plasma Pistol overcharge hits a Spartan-III in the Halo: Reach Multiplayer Beta.

    An EMP from a Plasma Pistol overcharge hits a Spartan-III in the Halo: Reach Multiplayer Beta.

  • Another devastating EMP charge from the plasma pistol in the Halo: Reach Multiplayer Beta.

    Another devastating EMP charge from the plasma pistol in the Halo: Reach Multiplayer Beta.

  • An EMP wave from the Armor Lock ability can disrupt nearby enemy shields in Halo: Reach.

    An EMP wave from the Armor Lock ability can disrupt nearby enemy shields in Halo: Reach.

  • A disabled Hornet in Halo 2: Anniversary.

    A disabled Hornet in Halo 2: Anniversary.

  • An EMP'd Sword T-54 Ghost in Halo 5: Guardians.

    An EMP'd Sword T-54 Ghost in Halo 5: Guardians.

  • A Hannibal Mantis' EMP stomp attack in Halo 5: Guardians.

    A Hannibal Mantis' EMP stomp attack in Halo 5: Guardians.

List of appearances

Sources

  1. ^ Wikipedia: Electromagnetic pulse
  2. ^ Halo: The Cole Protocol, page 317
  3. ^ Halo Wars, campaign level Shield World
  4. ^ Halo: The Cole Protocol
  5. ^ Halo: Reach, campaign level Long Night of Solace
  6. ^ Halo: Combat Evolved, campaign level Two Betrayals
  7. ^ Halo: First Strike, page 89
  8. ^ Halo 3: ODST, campaign level Prepare to Drop
  9. ^ Halo: Glasslands, page 224
  10. ^ Halo 4, campaign level Shutdown
  11. ^ Halo: Envoy
  12. ^ Halo 5: Guardians, campaign level, Guardians
  13. ^ Halo: Warfleet, p. 88-89
  14. ^ Halo: Legacy of Onyx
  15. ^ Halo: Bad Blood
  16. ^ Halo: Shadows of Reach, chapter 19
  17. ^ Halo: Shadows of Reach, chapter 21
  18. ^ Halo: Divine Wind
  19. ^ a b Halo: The Television Series, episode Contact
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