FSC239Y5 Lecture Notes - Lecture 3: Dna Profiling, Silver Nitrate, Minutiae
Document Summary
Two dimensional: an impression which for all practical purposes has the dimensions of length and width but not a significant depth. Three dimensional: an impression of length witch and depth, camera has to be parallel with the impression. An intentional or unavoidable characteristic that repeats during the manufacturing process and is shared by one or more other shoes or tire: tread pattern, type of footwear, size, wear pattern, defects indicative of the manufacturing process. The result when something is randomly added to or taken away from the original structure of the shoe or tire that either causes or contributes to making that shoe or tire unique. These provide the uniqueness and individualizing strength. Chemistry(blood reagents, bromophenol blue, potassium thiocyanate, iodine fuming, Scale be same plane as the lowest part of impression. Mark impression with designation number (f1, f2) Physically removing substrate with the impression on it and preserving it (floor tiles, etc)
