BLOOD SPATTER |
I've have experienced about blood spatter through Blood Stain Analysis Experiments. To do the experiments, we need paper,
blood, lino, tile, clear plastic sheet, ruler, protractor, wooden board, large
sheet of paper as the materials. The general hypothesis for the experiments is that the higher the height is, the more spatter the blood drop will be. In these experiments, the Independent Variables are the height, impact surface and angle; Dependent Variables are Diameter and Shape of the blood drop; Controlled Variable is only the height.
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Different HeightThe higher the height is, the bigger the diameter and shape of the blood drops are. (Clearer image in GALLERY or Press the button below)
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Different AnglesAs the angles increase, the bloodstains get longer compared to the round bloodstain. (Clearer image in GALLERY or Press the button below)
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Different SurfacesThe flatter the surface is, the bigger the diameter and shape of the blood drops are. (More result pictures in GALLERY or Press the button "Surface" below).
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BLOOD TYPES
ABO Blood Group
All humans and many other primates can be typed for the ABO blood group. There are four principal types: A (+/-), B(+/-), AB(+/-), and O(+/-). There are two antigens and two antibodies that are mostly responsible for the ABO types. Blood type A has A antigens and B antibodies; Blood type B has B antigens and A antibodies; Blood type AB has both A, B antigens and NO antibodies (Universal Recipient); Blood type O has NO antigens but both A and B antibodies so that people with blood type O can give blood to everyone, but it can't receive any other blood type apart from O. (Universal Donor). These antigens are the proteins on the surface of each blood type and they help to burst other foreigners when being invaded. For example, people with type A blood will have the A antigen on the surface of their red cells. As a result, anti-A antibodies will not be produced by them because they would cause the destruction of their own blood. However, if B type blood is injected into their systems, anti-B antibodies in their plasma will recognize it as alien and burst or agglutinate the introduced red cells in order to cleanse the blood of alien protein. Blood type O is the most common blood type and Blood type AB is the least common one.
All humans and many other primates can be typed for the ABO blood group. There are four principal types: A (+/-), B(+/-), AB(+/-), and O(+/-). There are two antigens and two antibodies that are mostly responsible for the ABO types. Blood type A has A antigens and B antibodies; Blood type B has B antigens and A antibodies; Blood type AB has both A, B antigens and NO antibodies (Universal Recipient); Blood type O has NO antigens but both A and B antibodies so that people with blood type O can give blood to everyone, but it can't receive any other blood type apart from O. (Universal Donor). These antigens are the proteins on the surface of each blood type and they help to burst other foreigners when being invaded. For example, people with type A blood will have the A antigen on the surface of their red cells. As a result, anti-A antibodies will not be produced by them because they would cause the destruction of their own blood. However, if B type blood is injected into their systems, anti-B antibodies in their plasma will recognize it as alien and burst or agglutinate the introduced red cells in order to cleanse the blood of alien protein. Blood type O is the most common blood type and Blood type AB is the least common one.