CHY 183 Lecture Notes - Lecture 4: Blood Residue, Skeletonization, Red

• School: Ryerson University
• Department: Chemistry
• Course: CHY 183
• Professor: Monica Sauer

Document Summary

Reconstruction= method used to support a likely sequence of events by the observation + evaluation of physical evidence, also including statements of those involved: dependent on: Bloodstain features: patterns distributed throughout a room can provide insight into the events of the crime. Investigators use the location + distribution + appearance of stains to reinterpret + reconstruct the events: useful in uncovering: Location/ position of a victim at time a bloody wound was inflicted. Angle at which the blood droplet struck a surface. Movement of a bleeding individual at the crime scene. Approximate number of blows that struck a bleeding victim. Approximate location of an individual delivering blows that produced a pattern. Surfa(cid:272)e texture + stain"s shape and size + location used when determining a stain"s dire(cid:272)tion/ dropping distance/ angle of impact: surface texture most important, the harder + less porous the surface, the less spatter. Direction of travel: the pointed end of the bloodstain always faces its direction of travel.