The refractive index is one of the most commonly measured physical properties when examining glass evidence in the forensic lab. It provides evidence as to the commotion and thermal history of the glass. There is one instance where the refractive index must be supplemented with additional evidence because this type of glass provides inconsistent data. That is
A) plate glass
B) leaded glass
C) optical glass
D) tempered glass

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.