Wednesday, August 3, 2011

Blood splatters

Projected bloodstains
When exposed blood source is subjected to force greater than the force of gravity.
Arterial spurt/gush
Resulting from blood exiting body under pressure from a breached artery

LARGE VOLUMES OF BLOOD (patterns created by same volume of blood,
from same source to target distance)
Projected blood (through syringe)
Spilled blood


Dripped Blood

What is shape of blood splatter?
It depends on a variety of factors, such as directionality. When a droplet of blood strikes a surface perpendicularly at 90 degrees, the resulting bloodstain will be circular. However, if it strikes the surface at an angle more or less than 90 degrees, the resulting bloodstain will be elongated or oval in shape.

Describe any other characteristic of the splatter.

What are the factors that affect the shape of the blood splatter? Name as many as possible.
Type of surface the splatter strikes, direction the blood splatter strikes the surface, angle of impact, the height the blood droplet is dropped from

Generate some hypotheses from the blood splatter patterns observed above.
The greater the height the blood droplet is dropped from, the larger the diameter of the resulting bloodstain. The greater the angle of inclination, the greater the length of the resulting bloodstain.


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