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== Origin ==
[[File:Dalinar by horizonproblems.jpg|thumb|right|200px|<small><center>by [[Coppermind:Artists/horizonproblems|horizonproblems]]</small></center> [[Dalinar]] bringing the Realms together, (and with it,summoning Stormlight)]]
{{quote
| Honor's power, during a storm, is concentrated in one place. It pierces all three realms and brings Physical, Cognitive, and Spiritual together momentarily in one. The gemstones, exposed to the wonder of the Spiritual Realm, are lit by the infinite power there.
}}
Stormlight comes directly from the [[Spiritual Realm]], leaking into the [[Physical Realm|Physical]] and the [[Cognitive Realm|Cognitive]] as the three realms are brought closer together in the highstorm.{{book ref|sa3|64}} It'sThis typically broughthappens toon Roshar during a [[highstorm]]. As itthe storm passes, any spheres exposed to it are infused with Stormlight near its end.{{book ref|sa2|74}} At the same time, it arrives in [[Shadesmar]] as a wave of light onhigh in the horizonsky. There, [[spren]] absorb it directly.{{book ref|sa3|101}}
[[Bondsmith]]s of third Oath or higher can likewise infuse spheres and people with Stormlight, althoughthough to do so takeswith significant effort.{{book ref|sa3|122}}{{wob ref|12295}} [[Dalinar]] iswas also capableable ofto openingopen [[Honor's Perpendicularity]] to release largefunctionally-infinite amountsamount of Stormlight over vast areasarea for a limited amount of time ,. albeit thisThis is , however, unusual, and possibly a consequence of Stormfather's particular nature as [[Honor]]'s [[Cognitive Shadow]] . Whether Dalinar can repeat this feat is unclear.{{book ref|sa3|119}}{{wob ref|12295}} ▼In the present, it appears that the [[Stormfather]] -- and, by extension, [[Honor]] -- is the primary force enabling Stormlight to cross over into other Realms. However, it has existed prior to the [[Shattering]], albeit its properties were slightly different.{{wob ref|9266}} ▼
▲In the present, it appears that the [[Stormfather]] -- and, by extension, [[Honor]] -- is the primary force enabling Stormlight to cross over into other Realms. However, it has existed prior to the [[Shattering]] ,. albeitBack itsthen, propertiesit werehad slightly different properties.{{wob ref|9266}}
▲[[Bondsmith]]s of third Oath or higher can likewise infuse spheres and people with Stormlight, although to do so takes significant effort.{{book ref|sa3|122}}{{wob ref|12295}} [[Dalinar]] is also capable of opening [[Honor's Perpendicularity]] to release large amounts of Stormlight over vast areas for a limited amount of time, albeit this is unusual, and possibly a consequence of Stormfather's particular nature as [[Honor]]'s [[Cognitive Shadow]].{{book ref|sa3|119}}{{wob ref|12295}}
== Appearance and Properties ==
Stormlight appears as luminescent white vapor. When free, it behaves similarly to smoke, dissipating in puffs and leaving trails when its source moves.{{book ref|sa2|85}} [[Gemstone]]s left outside during a [[highstorm]] absorb it, becoming infused, which manifests as the gems glowing.{{book ref|sa1|11}} The amount of Stormlight collected is not directly proportional to the strength of the highstorm.{{wob ref|11482}}
Absorbed Stormlight, if unusued, will eventually begin leaking out. The speed at which it leaks varies depending on howits ideal thecurrent vessel is. A person can only hold Stormlight for a few minutes at most, while a gemstone will hold it for several days -- the ones used as currency hold itglow for about fivea week, while bigger gems last a while longer.{{book ref|sa1|prologue}}{{book ref|sa1|17}}{{book ref|sa2|83}} [[Perfect gemstone]]s, like [[King's Drop]], can hold it for centuries, if not forever.{{book ref|sa3|i|13}} When leaking from gems, Stormlight assumes their color.{{book ref|sa1|56}}
== Uses ==
[[File:Shallan - I. The Magician .jpg|thumb|left|200px|<center><small>by [[Coppermind:Artists/taratjah|taratjah]]</small></center> [[Shallan]] using Stormlight for [[Illumination]] ]]
=== Magic fuel ===
Stormlight is the primary fuel of [[Surgebinding]] abilities. To absorb it, a Surgebinder breathes init Stormlightin from sources such as gemstones or the [[highstorm]] itself. When inhaled, Stormlight gives the user a sensation of increased energy, restlessness and desire to move, with several people comparing it to a storm raging inside them.{{book ref|sa2|42}}{{book ref|sa2|89}} While held, it will automatically heal wounds, exhaustion and even conditions such as poisoning or drunkenness.{{book ref|sa1|38}}{{book ref|sa3|18}} It can also be consumed to power the use of [[Surge]]s.{{book ref|sa2|7}}
ItStormlight can also be usedserve as replacement for other forms of [[Investiture]], most notably [[Breath]]. A [[Returned]] can survive off Stormlightconsuming without the need to consume their Breathsit.{{wob ref|4553}} Likewise, [[Nightblood]] can be fuelled by Stormlight, and when unsheathed, will begin to absorb it from its environment before going for living beings.{{book ref|sa3|119}} It's possible to transform Stormlight into Breath and use it in [[Awakening]], though that is noted as extremely difficult, with neither [[Vasher]], nor [[Azure]] or [[Hoid]] having figured out how to achieve this at this moment inso timefar.{{wob ref|12667}}
[[Fabrial]]s will not function unless the gems comprising them are infused with Stormlight.{{book ref|sa1|ars}}
=== Healing and sustenance ===
Even for non-Surgebinders, Stormlight has minor healing properties. Thanks to Roshar's atmosphere being suffused with it, Rosharans are notably healthier than people from other planets, and fall sick less often.{{wob ref|912}} Plants can also be encouraged to grow more quickly by placing Stormlight-infused gems nearby.{{book ref|sa2|i|1}}
[[File:Emerald sphere.jpg|thumb|right|200px|<center><small>by [[Coppermind:Artists/Sheep|Sheep]]</center></small> An infused [[sphere]] ]]
Even for non-Surgebinders, Stormlight hasis minor healing properties.also Thanksimportant to Roshar's atmospherenative beingbeings. suffusedCreatures with Stormlight[[gemheart]]s, mostrequire ofit, thepresumably timeto fuel their spren bonds, peopleand livinglarge therequantities of it are notablynecessary healthierfor thanthem non-Rosharansto andtransform. fallAmong sickothers, less[[chasmfiend]]s often.{{wobpupate ref|912}}in Plantsareas canthat alsoare behighly encouragedexposed to growhighstorms, moreand quickly[[singer]]s byneed placinghighstorm levels of Stormlight-infused gemsto nearbychange [[Singer#Forms|form]].{{book ref|sa1|15}}{{book ref|sa2|i|15}} In Shadesmar, [[Sprenspren]] derive sustenance from Stormlight, and ittend makesto thembecome more lively and energetic in its presence.{{book ref|sa3|101}}
=== Currency ===
The gemstones[[sphere]]s used as money across Roshar are generally considered more valuable when infused. While nominally spheresthey're haveworth the same value whether dun or glowing, merchants will often find dun spheres suspicious, and can sometimeswill call an expert to verify if a dun sphere isn't counterfeit.{{book ref|sa1|3}} Moneychangers capitalize on this, exchanging dun spheres for infused ones or taking spheres to be infused in their secured nets -- for a fee.{{book ref|sa1|11}} The value of infused spheres rises even higher with the return of [[Surgebinding]], with some people making a tidy profit off trading spheres with [[Urithiru]].{{book ref|sa3|8}}
Stormlight is directly used as a currency in Roshar's [[Cognitive Realm]], with moneychangers in [[Celebrant]] storing it in perfect gemstones.{{book ref|sa3|97}}{{book ref|sa3|99}} A device is used to transfer stormlightStormlight from smaller gemstones into the perfect ones, and in exchange, one receives credit which can be spent in the city.{{book ref|sa3|99}}
== Notes ==
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{{Stormlight}}
[[category: currencies]]
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