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Forensics Blood Spatter

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PRESENTATION OUTLINE

BLOOD SPATTER

BY DR DREW SLAYZ

ARTERIAL SPURTING

THE AFTER IMMAGE IS THAT OF A ARTERIAL SPURT COMES IN A WAVY PATERN

BACK SPATTER

IS WHEN A BULLET HITS A TARGET THEN THE BLOOD THAT COMES BACK AT THE PROJECTILE

CAST-OFF PATTERN

WHEN AN OBJECT STRIKES WITH QUICK MOTION THEN SWINGS UP WITHT THE SAME FORCE

HIGH VELOCITY IMPACT STAIN

TAKES ON A MIST TYPE OF BLOOD SPATTER

MEDIUM VELOCITY IMPACT STAIN

IS USUALLY CAUSED BY A BEATING WITH A BIG OBJECT

LOW VELOCITY IMPACT STAIN

USUALLY CAUSED BY A BEATING WITH A SMALL WEAPON

PASSIVE DROPS

BLOOD DROPS ONLY ACTED APON BY GRAVITY

SWIPE PATTERN

FOUND WHEN BLOOD IS SMEARED ACROSS A SURFACE

TRANSFER/ CONTACT STAIN

WHEN BODY PARTS/OBJECT TOUCH, THEN TRANSFER BLOOD FROM 1 PLACE TO ANOTHER