In a fire, solids don’t burn and liquids don’t burn, so what is burning? Fire is a result of fuel gasses mixing with oxygen and heat in the correct proportion.  Pyrolysis is a process when heat breaks down solids and liquids into fuel gases. Fuel gases mix with oxygen, and when ignited by heat, result in flaming combustion.

In the video, you are able to observe pyrolysis as it is happening. The lampshade heats up, emits fuel gasses, and then catches on fire.

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