eli5 – would a flammable substance still ignite if heated by a source that isn’t fire?

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I feel like it should, but if not, why?

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Anonymous 0 Comments

Yes. However a flame tends to be hotter then other sources and be a more focused source of heat. So it tends to be easier to ignite things with a flame then other means. However there are daily examples of using other heat sources to ignite things. For example a gas furnace or a cigarette lighter are both using an electric spark as a source of heat to ignite them. A match use friction heating to ignite. A car cigarette lighter is just a heating coil which gets hot enough that it can ignite the end of a cigarette. And in cooking you can heat the pan enough for things to catch fire, either intentionally as part of an impressive cooking technique or unintentionally in the case of grease fires. And speaking of unintentional fires electrical fires are also caused by bad electrical connections generating enough heat to make flammable things around them catch fire.

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