What does the presence of large crazing in glass indicate during an investigation?

The presence of large crazing in glass during an investigation indicates slow heat build-up. Crazing refers to the formation of small cracks or lines in glass that result from temperature changes. In cases of slow heat build-up, the glass heats gradually, which can lead to the development of these intricate patterns of crazing. This is often seen in scenarios where the glass has been subjected to prolonged heat exposure, allowing the material to expand and contract slowly, rather than experiencing a quick, high-temperature event that would cause different types of damage. In contrast, rapid heat build-up would typically result in shattering or other more severe forms of breakage rather than the formation of large, crazed areas.