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A device that uses infrared radiation—heat, essentially—to initiate reactions through thermal excitation rather than electrical sparks or high-energy photons. Infrared igniters are the sophisticated cousins of the humble match: they deliver precisely controlled thermal energy to exactly where it's needed, igniting fuels or materials without the complexity of lasers or plasmas. They're used in industrial furnaces, gas turbines, and any application where you need reliable, repeatable ignition without the electromagnetic interference of spark systems. In practice, an infrared igniter is a very fancy, very expensive heating element that glows hot enough to light things on fire. It's technology that's been around since humans discovered fire, just with better temperature control.
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