Physical evidence
Physical evidence is usually used by forensics as a significant tool in criminal investigations; physical evidence is known for its standard and individualistic characteristic from a crime scene; you can collect a lot of evidence such as bullets casing fingerprints, spermatozoa blood hair, and fiber evidence
for example, if the paint is found at a crime scene, then the paint chips are used for further analysis; it should be noted that during the collection of paint chips and paint, evidence should not be kept together, and they should be kept in clear plastic containers.
Glass can also be collected from a crime scene as the physical evidence is essential to note that if a gunshot bullet impacts the glass, radial glass fragment is moved away from the point of impact, showing the point of bullet entry behind concentric lines circling the same point. Fibers can also be collected as key evidence as they can be identified using an electron microscope; one should note that when dealing with fibers, one should put them in a pillbox or folded paper and then sealed using a sealing tape.
In crimes like rape, robbery, murder, and kidnapping, physical evidence like string used tapes and rope evidence can be found; thus, it is key to preserving it as it can be analyzed and used to capture the culprit. Over the last decade, fingerprints have been used to identify the suspect as individualistic characteristics s. They have the following patterns radial loop ulnar loop whorl, plain arch, plain whorl, central pocket loop, double loop whorl, and the accidental whorl. The different methodology can be used in fingerprint identification like super glue filming and ultra-violet imaging system in cases of violent crimes blood samples can be used as physical evidence from blood you can get DNA blood can be analyses by use of blood patterns analysis as blood evidence portrays individual characteristics like the blood type, gender age species, and rare conditions. DNA profiling has been to catch criminals’ DNA that can be sourced from physical evidence such as sweat, skin semen, hair urine, blood, and tissue. Using ballistic analysis, one can determine the type of firearm used.