PPT-Trace Evidence: Hair Forensic Science

Hair Hair is A slender threadlike outgrowth from the follicles of the skin of mammals Found all over our bodies Head Face Chest Limbs arms and legs Pubic region 2 Copyright Texas Education Agency 2011 All rights reserved. Hair. NS2232 - Littlefield. Trace Evidence--any small pieces of material, man-made or naturally occurring. Most common examples:. Hair. Fiber. NS2232 - Littlefield. Questions for Trace Evidence. What is it?. H. umphreys. What Is Trace Evidence?. Trace evidence is the materials or markings that are left behind when different objects or materials come into contact with one another.. This usually occurs due to friction.. a. Compare and contrast the history of scientific forensic techniques used in collecting and submitting evidence for admissibility in court (e.g. . Locard’s. Exchange Principle, Frye standard, . Definitions and Background. “Truth is incontrovertible. . Panic may resent it . Ignorance may deride it . Malice may distort it . But here it is.”. —Winston Churchill. What is forensic science?. Professor Angela Gallop CBE. CCRC Anniversary Conference. 2 November 2017. Perspective. 1974 – Forensic Science Service for police/prosecution and defence . Imbalance between supply and demand, backlogs and demoralisation, single mindset, miscarriages of justice. Do Now. : What forensic evidence can be determined from hair? . Hair is the most frequently found piece of trace evidence.. What is trace evidence?. Objective. : SWBAT identify forensic evidence found in hair samples. . 2. Copyright and Terms of Service. Copyright © Texas Education Agency, 2011. . These . m. aterials are copyrighted © and trademarked ™ as the property of the Texas Education Agency (TEA) and may not be reproduced without the express written permission of TEA, except under the following conditions:. Hairs and Fibers. FORENSIC SCIENCE: An Introduction by Richard Saferstein. 1. Introduction. Hair. is encountered as . physical evidence. . in a wide variety of crimes.. Although it is not yet possible to individualize a human hair to any single head or body through its morphology, it still has value as physical evidence.. Chapter 11. Hair as . Evidence. Human hair is one of the most frequently . found. pieces of evidence at the scene of a violent crime. Unfortunately, hair is not the best type of physical evidence for establishing . I: . Hairs and Fibers. FORENSIC SCIENCE: An Introduction by Richard Saferstein. 1. Introduction. Hair. is encountered as . physical evidence. in a wide variety of crimes.. Although . it is not yet possible to individualize a human hair to any single head or body through its morphology, it still has value as physical evidence. found. pieces of evidence at the scene of a violent crime. Unfortunately, hair is not the best type of physical evidence for establishing . identity. . It is not possible to show with any certainty that two hairs came from the same person or animal. However, hair can be used to . SFS2. Students will use various scientific techniques to analyze physical and trace evidence. .. b. Analyze the morphology and types of hair, fibers, soil and glass. . SFS1. Students will recognize and classify various types of evidence in relation to the definition and scope of Forensic Science. . CHE 113. . 2. Learning Goals and Objectives. Today, the role of science in the courtroom is undisputed. We rely upon the scientific analysis and interpretation of key evidence to both exonerate and convict. But this hasn’t always been true in history. In this chapter an introduction to the role that forensic science has and does play in criminal justice is presented. Also, the legal underpinnings of the admissibility, use, and limitations of scientific evidence and testimony are explored. In this chapter, you will need to understand the following concepts:. 2015-2016. Vocabulary. Vocabulary:. Keratin. A type of fibrous protein that makes up the majority of the cortex of a hair. Neutron . activation . analysis. A method of analysis that determines the composition of elements in a sample.