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{{Status|Canon}}
[[Image:Energy Bridge.jpg|right|thumb|Energy Bridge on Installation 04.]]
[[File:Light bridge.jpg|thumb|275px|A light bridge at the entrance to [[Installation 00|the Ark]]'s [[Installation 00 Citadel|Citadel]].]]
The '''Energy bridge''', otherwise known as a '''Light bridge''', is a [[Forerunner]] technology.
{{Quote|I’m showing a lot of photonic activity. The excited photons have displaced the air around the light path."<br>"Which means?"<br>"Which means that the light has become coherent. Solid.|Exchange between [[John-117]] and [[Cortana]]<ref name="tf">'''[[Halo: The Flood]]''', ''page 84-85''</ref>}}
'''Light bridges''' are examples of advanced [[Forerunner]] technology. Using the Forerunners' ubiquitous [[hard light]] technology to function, they are composed entirely of solidified light and act as substitutes to [[bridge (structure)|physical bridges]] in certain areas.<ref>'''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''', "[[Wages of Sin]]"</ref> As a result of their temporary nature, they are often employed as a security measure.


==Summary==
It has two components: a control panel and what are believed to be energy projectors. The control panel is a semitranslucent holographic array of lines, circles, and polygons that is projected from the surface of Forerunner metal. Tapping a "blue-green circle"<ref>''[[Halo: The Flood]]'', page 84</ref> activates the bridge. Photons begin to stream between the two projector arrays, and are stimulated by unknown excitations to "displace the air around them", becoming a firm, solid bridge of coherent bluish light, capable of holding large amounts of weight, including [[M12 Warthog LRV]]s. When damaged, the bridge transiently flickers, occasionally dropping peoples crossing over the bridge into the space below<ref>''[[Halo: Combat Evolved]]'', ''[[343 Guilty Spark (Level)]]''</ref>.
There are usually two components to a light bridge: a control panel, and the light emitters. The control panel is a semi-translucent holographic array of [[Forerunner symbols|Forerunner symbols and glyphs]] that are projected over the surface of a pedestal. Though a variety of control panel configurations have been observed, in the case of one of the light bridges on [[Installation 04]], tapping the "blue-green circle" activated the light emitters.{{Ref/Reuse|tf}}


A cascade of coherent, high-energy photons are emitted through the air, generating a visible, horizontal band of light. Through unspecified physics, the coherent band of light interacts with the illuminated air, and pushes aside the air within and around it it, becoming a firm, solid mass capable of supporting extremely heavy weights, ranging from an [[M12 Light Reconnaissance Vehicle|M12 Warthog LRV]] to several [[M808B Main Battle Tank|M808B Scorpion MBTs]].<ref name="ark">'''Halo 3''', campaign level, ''[[The Ark (level)|The Ark]]''</ref><ref name="covenant">'''Halo 3''', campaign level, ''[[The Covenant (level)|The Covenant]]''</ref> When damaged, the emitters flicker on and off, causing the light bridge to flicker, creating a less stable force.<ref name="gs">'''Halo: Combat Evolved''', campaign level, ''[[343 Guilty Spark (level)|343 Guilty Spark]]''</ref>
Energy bridges were present exclusively in ''[[Halo: Combat Evolved]]'', and made appearances in Forerunner underground complexes on [[Installation 04]]: the subterranean facilities in the [[campaign]] level ''[[Halo (Level)|Halo]]'' and ''[[343 Guilty Spark (Level)|343 Guilty Spark]]''.


Light bridges are commonly seen on most Forerunner constructs. The [[Relic (location)|Forerunner complex]] on [[Harvest]] featured light bridges crossing over a series of chasms surrounding the center of the main chamber. These were used by the UNSC forces as they made their way in and out of the facility during the [[Harvest Campaign]] in [[2531]].<ref>'''Halo Wars''', campaign level, ''[[Relic Interior]]''</ref> [[Trove]], discovered by the {{UNSCShip|Spirit of Fire}} in the same year, had a multitude of light bridges to span chasms within its interior. Unlike most light bridges encountered by the UNSC, which manifested as simple beams of blue-white light, these light bridges featured arrangements of lines forming symmetrical, geometric patterns characteristic of Forerunner art and architecture.<ref>'''Halo Wars''', campaign level, ''[[Beachhead (Halo Wars level)|Beachhead]]''</ref>
{{Ref}}


Light bridges were used by John-117 during the UNSC's operations on the surface of [[Installation 04]], in the [[Halo (Halo: Combat Evolved level)|subterranean complexes]] and the [[Flood containment facility]].{{Ref/Reuse|tf}}{{Ref/Reuse|gs}} Though mainly unseen on [[Installation 05]], they were also present on [[Installation 00|the Ark]], again in a [[The Ark (level)#Forward Unto Dawn|subterranean area]],{{Ref/Reuse|ark}} and another one at the entrance to the [[Installation 00 Citadel|Citadel]] near the Ark's [[Strip mining moon|Core]].{{Ref/Reuse|covenant}} Light bridges were also present on [[X50]]; some of these bridges were crossed by [[Spartan Operations|Spartan]] [[Sarah Palmer]] during the [[Battle of Draetheus V]].<ref>''''Halo: Spartan Assault''', ''[[Operation F: Hydra]]''</ref> The [[Promethean]]s' shield installation [[Requiem]] and the [[Didact]]'s ship, ''[[Mantle's Approach]]'', also contained a great amount of light bridges.<ref>'''Halo 4'''</ref> During the [[New Phoenix Incident]], [[Cortana]] and several of her rampant copies were able to manifest hard light holograms of themselves from a light bridge and create hard light shackles that temporarily bound [[Ur-Didact|the Didact]].<ref>'''[[Halo 4]]''', campaign level ''[[Midnight]]''</ref>
[[Category:The Forerunner]]
 
[[Category:Technology]]
==Gallery==
<gallery>
File:HCE-BridgeControlPanel-screen.png|The [[John-117|Master Chief]] using a control panel that activates the light bridge on Installation 04.
File:HCE-HardLightEnergyBridge-screen.jpg|A light bridge as part of an underground tunnel network on Installation 04 in ''Halo: Combat Evolved''.
File:HaloWars-HardLightBridge.jpg|The light bridge in the Relic in ''Halo Wars''.
File:Energy Bridge.jpg|The remastered light bridge on Installation 04 in ''Halo: Combat Evolved Anniversary''.
File:H4-HardlightEnergyBridge.jpg|A light bridge on the ''Mantle's Approach'' above a slipspace rupture in ''Halo 4''.
File:HW2-Hardlightbridge.jpg|A light bridge on Installation 00 in ''Halo Wars 2''.
File:HTV-Thermopylae-LightBridge.jpg|A light bridge on Onyx in ''Halo: The Television Series''.
</gallery>
 
==List of appearances==
*''[[Halo: Combat Evolved]]'' {{1st}}
*''[[Halo: The Flood]]''
*''[[Halo Graphic Novel]]''
**''[[Breaking Quarantine]]''
*''[[Halo: Ghosts of Onyx]]''
*''[[Halo 3]]''
*''[[Halo Wars]]''
*''[[Halo: Combat Evolved Anniversary]]''
*''[[Halo 4]]''
**''[[Spartan Ops]]''
*''[[Halo: Spartan Assault]]''
*''[[Halo: Spartan Strike]]''
*''[[Halo: Hunters in the Dark]]''
*''[[Halo 5: Guardians]]''
*''[[Halo Mythos]]''
*''[[Halo Wars 2]]''
*''[[Halo: Renegades]]''
*''[[Halo: Divine Wind]]''
*''[[Halo: The Television Series Season Two]]''
**''[[Thermopylae (TV Series)|Thermopylae]]''
*''[[Halo: Epitaph]]'' {{Mo}}
 
==Sources==
{{Ref/Sources}}
 
{{Forerunner|technology}}
[[Category:Forerunner technology]]

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