CHY 183 Lecture Notes - Lecture 4: Blood Residue, Luminol, Hemoglobin
Document Summary
Crime scene reconstruction: method used to support likely sequence of events @ crime scene via observation + evaluation of physical evidence + taken statements. Medical examiners, criminalists, and law enforcement personnel work together to recover physical evidence and sort out events surrounding occurrence of a crime. Laser beam: used to determine search area for position of shooter who fired a bullet through a window. Harder and non-porous surfaces = less spatter i. e. smooth tile or glass. Rough surfaces = irregular shaped stain w/ serrated edges and satellite spatter. Location/position of victim at the time the bloody wound was inflicted. Location of the attacker that made the bloodstain. # blows that the victim was struck with. Add water to stick " changes color if = blood. Powder made of carbon, hydrogen, oxygen, nitrogen mixed with liquid. Reacts w/ iron in blood " glow in the dark.
