CNN Forensic Files February 13, 2014 07:16:00
A refractive index. >> refractive index is a measure of the speed of light through a transparent object. >> the glass is placed in a silicon liquid, then heated. the point where the glass disappears is called its refractive index. >> the five fragments that have the same refractive index as the fragments that were recovered from the door are consistent with having originated from the door. >> they came back with not only the glass fragments that matched the windowpanes, but also paint and wood samples that were contained within that ball bat which matched the doorway or the frame of that door....