Just watched Crawl (2019) and got me thinking.
Edit: i should clarify, why do they not extinguish like a normal flame.
In: Technology
A fire needs 3 things to burn:
1. Heat
2. Fuel
3. Oxygen
Normally there’s plenty of oxygen just hanging out in the air, so that one is a given. If you want an underwater fire though you’ve got to bring your own oxygen. So underwater flares are usually a combination fuel and oxydizer in a solid stick. Give it a good shot with a friction striker and you have everything you need for a fire!
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