When a flame is blue, that means it is clean. "Clean" means that there are not as many carbons coming off. Sut is the ash that comes off of "dirty" flames because it is pure carbon and leads to the carbon dioxide in our atmosphere.
The Methanol is the cleanest choice out of these options because it is extracted from corn.
His 5 main gasses used were: Cellulose, Candle, Gasoline, Ethanol, and Methanol.
In order for gasses to become liquids, they need an immense amount of pressure. So, for this demo, he could only show us the gas forms.
The "dirtier" gasses go out quickly and let out a lot of dirty emissions.
Knowing this, solar, wind, hydro etc are the better energy sources!
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