Physical evidence is left are every single crime scene. Forensic scientists collect the evidence that connects an individual to a crime. Typically, they search for any physical objects, whether its hair, saliva, or even fingerprints, that is relevant. Also, the scientist find blood burns, and writing left at the crime scene. Since 1904, when the fingerprint was used to identify its inmates at a jail, physical or forensic evidence is used to crack even the hardest of crimes and fight for the innocent.
At the scene of the crime, the scientist search for anything, along with the most familiar piece of forensic evidence: the fingerprint. Fingerprints are very helpful because they can pinpoint exactly who it belongs to. But, nowadays, suspects have learned to cover up their tracks making it harder to find fingerprints. Therefore, forensic scientists find any other clues to lead on the trial. If your fingerprints are found at a crime scene, they can and will be held against you in trial. The print is left behind due to the sweat and ridges on the top end of your fingers. As I have said before, suspects learn to cover their tracks, so fingerprints are usually an accidental impression left by friction skin. A way to demonstrate the fingerprint is to use clay or flour and stamp your thumb down firmly and it will leave a nice and clear print. Forensic scientists check for fingerprints that can be anywhere, from the walls to a desk. Overall, fingerprinting is not the easiest, but is an effective way to solve a crime.
Another of the many types of forensic evidence is traces of blood. Blood is a good way to figuring out who the criminal is. The suspect might’ve accidentally left behind their blood, which the scientist tests in a machine that can give you many results. When the testing is through, it can identify the blood type and who it belongs to. Sometimes the blood isn’t a human’s, but an animal’s. This usually can narrow down to the most accurate piece of...
Cited: Newton, David E. “Forensic Evidence: Overview.” Issues: Understanding Controversy and Society. ABC-CLIO, 2012. Web. 13 Nov. 2012.
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