Physical Evidence Principles

Physical evidence principles are the concepts about handling physical evidence and what it can show. Trace evidence examination covers hairs and fibers, paints and polymers, glass and soil, and sits among the common forensic laboratory disciplines alongside DNA, chemistry, latent fingerprints, firearms and toolmarks. The National Institute of Standards and Technology works to ensure that evidence is collected, analyzed and communicated accurately and effectively, and lists evidence management and trace evidence among its research focus areas. Forensic scientists examine evidence from crime scenes to produce objective findings that can help prosecute a perpetrator or clear an innocent person.