- The scientific study of hair was introduced when one of the first scientific reports was published in 1857 in France. In the early 20th century, the study of hair expanded. Professor John Glaister's published "Hairs of Mammalia from the Medico-legal Aspect" in 1931 which was a source for information on hair analysis. Then "Microscopy of Hairs: A Practical Guide and Manual" was published by John Hick which showed groundwork for hair evidence analysis.
Complete Hair:
Major Types of Fibers:
Cotton: Cotton grows around seeds of cotton plants and is used to make many things because of it's softness. It has a high absorbency which makes it easy to dye. Also, it can still be used in high temperatures.
Wool: is made from the fleece of sheep and there are many of them in different climate areas which makes different types of wool. An example is Merino. Merino wool is very soft and has the ability to quickly absorb moisture from your body which makes it cool in warmer temperatures.
Nylon:
Hair/Fiber Collection Techniques:
When handling evidence, you must use gloves or use equipment such as tweezers so you don't contaminate the evidence. Samples should be placed in labeled envelopes.
Hair/ Fiber Analysis:
In crime scenes, hairs and fibers are used by scientists to help identify the criminals and victims. To observe these different hairs and fibers scientists need to use microscopes to examine the designs and patterns to determine what type of fiber it is, or who's hair it is.
Reliability of Hair/Fiber Crime Scene Data:
Hair and fibers are very helpful as information in crime scenes, although the results can't always be conclusive. This is because there are many different hairs and fibers in the world so it is very broad.
Hair and fibers are very helpful as information in crime scenes, although the results can't always be conclusive. This is because there are many different hairs and fibers in the world so it is very broad.
Famous Hair/Fiber Analysis Case:
Fiber analysis was used to identify a criminal in the famous case, Atlanta Child Murders. In this case, Robert Anthony Buell raped and murdered two young girls in Ohio and was convicted for murder. He left behind distinct orange fibers on each of the bodies and after observed, the fibers matched the orange fibers found in a van. Last on, a woman was kidnapped and kept prisoner in a man's house but was able to escape and contact authorities. They found that this mans van had the same fibers from the two young girls bodies which proved Buell to be the kidnapper and murderer.
I liked the writting aspect of this post but I think you need some pictures to really make it great.
ReplyDeleteI really like the way you described the major fibers. I like the design of your blog in general. I, however, think that some pictures may need to be added to really make the whole post look the best it can.
ReplyDeleteKelly! This is done so well! Your information is extensive, but concise! Great job!
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