FSC239Y5 Lecture Notes - Lecture 3: Clarity
Document Summary
Transfer of class and individual characteristics from footwear to surface. Measurements change depending factors such as speed, surface> unreliable for. Can tell if walking, running, limping, walking backwards,etc. If cast doesn"t work, breaks, destorys, etc. always have a photo to relate to. Esld create a more concentrated charge on lifting medium. Greater charge on lm attracts dust and dirt from surface. Residual positive/negative charges keep print in place on lm. Impressions ,ay not initially be visible to naked eye. Set for 1 hr, si 24/48hrs, brush away any dirt, left with cast impression. Shoe design worn by perpetrators not usually known when scene processed. Document footwear of people who walked through scene. People often posses multiple pairs of same design. Sole designs altered by repetitive contact with ground. Matching wear patterns is signi cant evidence of a match but not enough for. Individualizing power lies in randomness of how these features were acquired.
