COULD IGNI EXIST? - The Witcher Science

Channel:

SpacePak

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Published on July 3, 2015 10:36:52 PM ● Video Link: https://www.youtube.com/watch?v=QyHmyOpxh-Q

Game:

The Witcher 3: Wild Hunt (2015)

Duration: 2:43

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178

Big thanks for Matt McKellar for writing a good portion of this video!

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In the Witcher 3, the main character can use a number of different spells and magic. One of the more popular one is Igni. According to the game, Ignis is the sigil of combustion. Used to ignite flammable material. This spell is essentially a standard fireball spell, doing first to third degree burns. Un-flammable enemies (like gargoyles and golems) may not remain alight as long as flammable enemies.Sorcerers have been known to increase the potency of this sigil to call forth fire from the heavens.

How exactly this works is unknown, but it is clear that combustion is taking place. What then must his magic require to invoke combustion? Fuel, temperature, and an oxidizer would allow Geralt to create flame with igni. In Geralt’s case, the oxidizer is easy to find. The air he breathes contains 20% oxygen which is more than enough to combust a fuel source, but it’s not made clear what he uses as a fuel. Since it wouldn’t contribute to gameplay, this detail is overlooked from a scientific perspective, but one could infer that he gathers ingredients from the plants, animals and minerals he finds in his journey. A simple approach would be fine grain or powdered aluminum. If dispersed in the air it can be ignited.

The way powdered material becomes explosive is actually quite simple. When an object catches fire it can only do so on the surface. A large piece of material has a fairly small surface area. If it was broken down into a powder it can have exponentially more surface area meaning it can ignite and release more of its energy at once. Even objects traditionally not thought of as being flammable can be quite explosive. Ignite with a catalyst and boom, you have Igni.


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