NATS 1575 Study Guide - Midterm Guide: Electromagnet, Employee Benefits, Bromine
1 Mar 2018
School
Department
Course
Professor
Document Summary
Forensic science: application of science to criminal & civil laws. Bertillon, galton, lattes, goddard, osborn, locard developed principles & techniques needed to identify/compare physical evidence. Locard"s exchange principle: states that when a criminal comes in contact w/ an object/person, cross-transfer of evidence occurs. Developed b/c of rapid growth & a lack of national & reginal planning & coordination. Approx 400 of them operate at various levels of government. Evidence technicians 24-hour call for evidence collection at crime scenes. Training ensures all evidence is recognized & collected properly. When there"s no training use lectures, tours of lab, & evidence collection manuals. Increasing number due to supreme court decisions in 1960s for police to place greater emphasis on scientifically evaluated evidence, accelerated drug abuse, advent of dna profiling. Physical science unit: using chemistry, physics, & geology for physical evidence. Biology unit: biologic sciences to investigate blood samples, body fluids, hair, fiber samples. Firearms unit: discharged bullets, cartridge cases, shotgun shells & ammunition.
