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Chapter 15 forensics
Chapter 15 Vocabulary
Term | Definition |
---|---|
cast | 3d impression may be made to preserve evidence |
dental stone | casting material used in snow |
dentin | similar to bone composed primarily of calcium and phosphorus |
dentition pattern | shape of teeth |
electrostatic dusting | technique used to reveal fine dust and create an imprssion |
enamel | tough covering of teeth; hardest substance in the human body |
gel lifting | method used to visualize and recover latent impressions; best for oily or moist impressions |
grooves | indentations |
latent impressions | hidden impressions requiring special techniques to be visualized. |
patent impressions | 2 D impressions that are already visible |
plastic impressions | 3D impression cast in soft material such as soil, snow or blood |
ridges | elevated regions |
skid to stop formula | used to estimate speeds of vehicles |
sole | pattern on bottom of a piece of footwear |
tire groove | depression in tread pattern |
tire rib | ridge of tread running down tread area and around circumference of the tire |
tire ridge | elevated area on the tread pattern |
track width | distance from center of tread pattern on left tire to center of tread pattern on corresponding right tire; can be different for front and rear axles. |
tread pattern | unique design or a tire's surface |
turning diameter | measure of how tight a circle can be driven by a vehicle |
wheel base | distance from center of front axle on a vehicle to center of rear axle. |