The refractive index used to match questioned glass samples represents:

Answer 1

The refractive index used to match questioned glass samples represents the measure of how much the glass material bends light as it passes through it. It indicates how fast light propagates in the glass compared to its speed in a vacuum. By determining the refractive index of the questioned glass samples and comparing it with known reference values, forensic scientists can identify and match glass fragments found at crime scenes to potential sources. This can be helpful in linking suspects, objects, or vehicles to a crime.