Saturday, November 19, 2011

Forensic Science Part II: Hair/Fiber Analysis

Typical hair/ fiber Analysis. How do scientist anayze and use hair /fiber data?
                                                       
                                                                        This is a picture of hair samples that have been analyzed.

How do forensic scientist analyze hair and fibers?


First of all, forensic scientist analyzes hairs and fibers to see who the true suspect of a crime is. When a crime has been discovered police surround the scene so no one disturbs the evidence of the crime scene. Then the forensic scientist come and collects the particular hairs and fibers of the crime scene. Forensic scientist analyzes data from the hair and fibers by using math and problem solving methods. Forensic scientist also uses chemicals, microscopes and different research techniques. Only if the root of the hair sample has blood or skin on it then forensic scientist can do some DNA testing upon the hair strand. Now if the root of the hair has no blood or skin upon it is characterized by its color and structure. Forensic scientists do analyze the hair to see if the hair is an animal hair or human hair. Forensic scientist analyzes fibers by getting them from different particular objects from a crime scene. They use microscopes or different scientific equipment to see the comparison of victim’s fibers to the actually killer. Microscopes are so important in seeing the different details and how they link together. Even if controlled fibers are not shown, a suspect’s fiber can tell a lot of things about the crime. Examining the one fiber from a suspect of a crime can shows information about color and where it is from. Now synthetic fibers have a very weird unnatural texture compared to natural fibers.
I had no idea that forensic scientist have to do a abundant of things to analyze hairs and fibers at a crime scene. I learned hairs and fibers are the number one cause of getting caught of doing a crime. Hairs and fibers are so powerful. Hair and fibers can tell your DNA and if you were at the crimes scene . It is just mind blowing of the things you can do with hairs and fibers. I tell you I won't be creating a crime any time soon!



"HowStuffWorks "How Forensic Lab Techniques Work"" HowStuffWorks "Science" Web. 02 Dec. 2011. <http://science.howstuffworks.com/forensic-lab-technique.htm>.
This website above gets the credibility of the idea in my posting about how forensic scientist use scientific equipment to analyze fibers.



Dillion, Hall. "Scientist The Crime Lab." Forensics A Carrer In. Web. 17 Nov. 2011. <http://www.bls.gov/opub/ooq/1999/Fall/art01.pdf>.

This website above gets the credibility of the idea that I used in my research posting about forensic scientist using math, problem solving methods, chemicals, microscopes and other different research techinques.

"Hair Analysis - ENotes.com." ENotes - Literature Study Guides, Lesson Plans, and More. Web. 02 Dec. 2011. <http://www.enotes.com/hair-analysis-reference/hair-analysis>.

This website gets the credibility of the idea of forensic scientist analyze the hair by the root of the hair which contains DNA .



Sapp, Brennon. "Hairs and Fibers." Forensics. Web. 4 Nov. 2011. <http://www.bsapp.com/forensics_illustrated-/forensic_text_adobe./text_unit_5_hair_fiber.pdf>.

This website gets the credibility for the idea of that if the hair root has no blood or skin on it than the hair is characterized by color and structure. This website also gets the credibility of the idea of examining one lone fiber can tell the color and the origin. In addition to, this website gets the credibility of the idea that synthetic fibers have unnatural texture.


Links

http://www.thermo.com/eThermo/CMA/PDFs/Articles/articlesFile_2278.pdf

http://www.swgmat.org/Forensic%20Human%20Hair%20Examination%20Guidelines.pdf


1 comment:

  1. your really good at citing your work... Mr. Kelly would realllllly like that! :) Good job!

    ReplyDelete