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Glass
a hard, amophus, transparent material made by heating a mixture of sand and other activities
Amorphus
without shape or form
Density
the ratio of mass to volume
Becke Line
the line created as refracted light becomes concentrated around the edges of a glass fragment
Obsidian
volcanic glass
Soda-lime glass
the most common glass, inexpensive and easy
Leaded glass
glass containing lead oxide
Tempered glass
glass which is strengthened by introducing stress through rapid heating and cooling of the glass surface
Laminated glass
two sheets of ordinary glass bonded together with a plastic film
Radial fracture
a crack in the glass that extends outward like the spoke of a wheel
Concentric fracture
a crack in the glass from a rough circle around the point of impact
Refraction
the change in the direction of light as it changes speed when moving from one substance into another
Refraction index
a measure of how light bends as it passes from one substance to another
Silicon dioxide
the chemical name for silica
normal line
a line drawn perpendicular to the interface surface of two different media
Lime
what is added wo prevent the glass from becoming permeable in water
soda
added to reduce the melting point
exit holes
the larger of the holes made from a bullet
entrance holes
the smaller of the holes made from a bullet
Sand
what is the main ingredient of glass
Crystal stemware
what is made of leaded glass
side windows
which windows in autos are made from tempered glass
wider on the exit side
when a bullet penetrates a panel of glass the crater is
