Glass and Paint ( Trace Evidence )

Question 1

Amorphous Solid

Answer 1

atoms and molecules within glass which are organized in a random structure similar to the molecular structure of a liquid

Question 2

Angle of Refraction

Answer 2

angle in which the light ray travels away from the boundary of an object

Question 3

Anisotropic

Answer 3

more than one refractive index

Question 4

Borosilicate

Answer 4

contains compounds to increase the strength of the glass and insure stability in high temperatures

Question 5

Concentric Fractures

Answer 5

form perpendicular to radical fractures on the side of the force as the tension and compression ripples throughout the glass

Question 6

Density

Answer 6

used for comparison analysis; calculated by dividing mass by volume

Question 7

Glass

Answer 7

inorganic compound made of quartz sand and combined with other oxides

Question 8

Hot Stage Method

Answer 8

precise method used for determining the exact refractive index of glass fragments

Question 9

Isotropic

Answer 9

one refractive index as opposed to anisotropic

Question 10

Paint Extenders

Answer 10

solid components of paints which can serve a variety of purposes such as making the application easier

Question 11

Phase Contrast

Answer 11

clear particles will not be visible using traditional bright field light

Question 12

Radial Cracks

Answer 12

begin at the site of impact and radiate outward based on the amount of force used to break the glass

Question 13

Refractive Index

Answer 13

measurement which determines how light will refract within an object compared to how light travels in a vacuum

Question 14

Snell’s Law

Answer 14

established relationship between the path a ray of light takes in one medium and the path of which the same light ray takes in a new medium

Question 15

Soda-lime Glass

Answer 15

most basic form of glass; commonly found in jars, windows and lamps

Question 16

Tempering

Answer 16

process used to increase the strength of glass which entails compressing the surface of the glass and expanding the inside layers of the glass