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A light bulb that pointed to the direction of a fire is displayed in McCollom’s office

August 3, 2012 | 6:00 a.m. CDT
A light bulb that pointed to the direction of a fire is displayed in Lt. Shawn McCollom’s office on Wednesday. According to McCollom, an incandescent light bulb may appear as “pulled” in a fire because the gas inside the bulb expands and pushes out the softened glass on the side closest to the heat source.

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