Bloodstain Pattern Analysis
Bloodstain Pattern Analysis (BPA) is the study and analysis of bloodstains at a known or suspected crime scene with the purpose of drawing conclusions about the nature, timing and other details of the crime. The patterns of the blood stain can help in crime scene reconstruction. It is used to study homicide or other violent crimes in which a lot of blood may be present. It is one of the several specialties of forensic science. The use of bloodstains as evidence is not new. Since the late 1950s, BPA experts have claimed to be able to use biology, physics, and mathematical calculations to reconstruct with accuracy events at a crime scene, and these claims have been accepted by the criminal justice system. It uses an analysis of the color, shape, and size of blood stains at a crime scene, as well as principles of fluid mechanics and biology to draw conclusions about the nature and proceedings of a crime scene.Read more on Wikipedia
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