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Myth of Crazed Glass

Myth of Crazed Glass. MYTH:. Crazing of windows, in which hundreds of cracks appear in the glass, indicates rapid heating and means an accelerant was used to start the fire. REALITY:. Crazing is caused by the rapid cooling of window glass, as when water from a fire hose strikes a hot window.

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Myth of Crazed Glass

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  1. Myth of Crazed Glass

  2. MYTH: Crazing of windows, in which hundreds of cracks appear in the glass, indicates rapid heating and means an accelerant was used to start the fire

  3. REALITY: Crazing is caused by the rapid cooling of window glass, as when water from a fire hose strikes a hot window

  4. Affects on Investigation • Can lead to false accusations of arson • May falsely indicate accelerant use

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