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mo53sz t1_j27rz26 wrote

Are you sure? What about a Bunsen burner. That's just gas but they make a sound. I think the sound is a result of the air around the fire being rapidly heated, expanding and rising. So is it the fire, the flammable substance or the air that's making the sound? None would exist in This state without the other.

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6l233Cl t1_j27ug0b wrote

If you are talking about the hissing of a Bunsen burner, it is unarguably because of the flow of the fuel gas. As for your idea of heating air makes sound, go listen to an electric stove or a soldering iron.

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