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Forensic Science – Blood and Blood Spatter PowerPoint Presentation
Your purchase includes 43 PowerPoint slides, in both .ppt and .pdf format.The Blood and Blood Spatter PowerPoint Presentation covers the following topics: History of Blood Study of Blood Composition of Blood Blood Types Unique Blood Proteins Antigen-Antibody Response What is Blood Spatter?
(5) Aspect 1: Angle of Impact. In Blood Spatter Analysis, finding the angle of impact is crucial. * As you can see from the picture above, 90 degree angles are perfectly round drops with 80 degree angles taking on a more elliptical shape * The more acute the angle of impact, the more elongated the stain. * At about 30 degrees the stain will begin to produce a tail. * The more acute the angle, the easier it is to determine the direction of travel. * The tail points in the direction of travel.
A new formula helps CSIs determine whether a victim took a blow standing up. 1. Height of the blood at the beginning of its parabolic arc, that is, when it left the body. 2. Tangent of the angle at which the first blood drop hit the ground. 3. Tangent of the angle at which the second drop hit the ground. 4. Horizontal distance the first drop traveled. 5. Horizontal distance the second drop traveled.
Forensic entomology. Application and study of insect and other arthropod biology to criminal matters. It also involves the application of the study of arthropods, including insects, arachnids, centipedes, millipedes, and crustaceans to criminal or legal cases. Associated with death investigations, used to detect drugs and poisons, determine the location of an incident, and find the presence and time of the infliction of wounds.