Answer:
Explanation:
This type of determination compares a known sample to a glass fragment to see if the two samples came from the same source.
Glass can be made from a variety of different materials that differ from batch to batch. The presence of the different materials in the glass makes it easier to distinguish one sample from another. Also, the properties of glass can vary depending upon the temperature the glass is exposed to during manufacturing. Basic properties, such as color, thickness, and curvature, can also help to identify different samples of glass just by looking at them. Optical properties, such as refractive index (RI), are defined by various manufacturing methods. RI is the manner in which light passes through the glass. This can be measured easily even on small fragments of glass. These properties help to indicate that two samples of glass could be from the same source.
Answer:
Issues of this payphone
Explanation:
The payphone has no records of who called. The workers don't recall there being a payphone.
