So as others have said movie magic, in the real world they last 15-20 minutes ,but also you don’t want to use those in doors. They are made with some sort of hydrocarbon normally tar, and will burn with a lot of thick smoke. If you are in a confined space you will rapidly be over come from the smoke.
In reality for non electrical light you would go with a candle in a box open on the top and front. Preferably with the insides being reflective. E.g. made out of polished metal.
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