1. Physical Evidence Vocab On Flowvellane

Crime Scene Investigation: Guides for Law Enforcement Glossary The definitions contained herein apply to terms as used in this document. ABFO scales (American Board of Forensic Odontology scales). An L-shaped piece of plastic used in photography that is marked with circles, black and white bars, and 18-percent gray bars to assist in distortion compensation and provide exposure determination.

4 Crime scene and physical evidence awareness for non-forensic personnel The value of physical evidence and the concept of chain-of-custody Physical evidence can be anything from massive objects to microscopic items, generated as part of a crime and recovered at the scene or at related locations.

1. Magdalena Yvette Carvajal pleaded guilty Thursday to tampering with physical evidence and is set to be sentenced Tuesday. Prosecutors indicated in court she would receive a 10-year prison sentence.
2. Physical evidence usually involves objects found at the scene of a crime. Physical evidence may consist of all sorts of prints such as fingerprints, footprints, handprints, tidemarks, cut marks, tool marks, etc. Examination of some physical evidence is conducted by making impressions in plaster, taking images of marks, or lifting the fingerprints from objects encountered.

Physical Evidence Vocab On Flowvellane

For measurement, the plastic piece is marked in millimeters. Alternate light source Equipment used to produce visible and invisible light at various wavelengths to enhance or visualize potential items of evidence (fluids, fingerprints, clothing fibers, etc.). Bindle paper Clean paper folded to use to contain trace evidence, sometimes included as part of the packaging for collecting trace evidence.

Biohazard bag A container for materials that have been exposed to blood or other biological fluids and have the potential to be contaminated with hepatitis, AIDS, or other viruses. Biological fluids Fluids that have human or animal origin, most commonly encountered at crime scenes (e.g., blood, mucus, perspiration, saliva, semen, vaginal fluid, urine). Biological weapon Biological agents used to threaten human life (e.g., anthrax, smallpox, or any infectious disease). Bloodborne pathogen Infectious, disease-causing microorganisms that may be found or transported in biological fluids.

Boundaries The perimeter or border surrounding potential physical evidence related to the crime. Case file The collection of documents comprising information concerning a particular investigation.

(This collection may be kept in case jackets, file folders, ring binders, boxes, file drawers, file cabinets, or rooms. Sub-files are often used within case files to segregate and group interviews, media coverage, laboratory requests and reports, evidence documentation, photographs, videotapes, audiotapes, and other documents.) Case identifiers The alphabetic and/or numeric characters assigned to identify a particular case.

Chain of custody A process used to maintain and document the chronological history of the evidence. (Documents should include name or initials of the individual collecting the evidence, each person or entity subsequently having custody of it, dates the items were collected or transferred, agency and case number, victim's or suspect's name, and a brief description of the item.) Chemical enhancement The use of chemicals that react with specific types of evidence (e.g., blood, semen, lead, fingerprints) in order to aid in the detection and/or documentation of evidence that may be difficult to see.

Chemical threat Compounds that may pose bodily harm if touched, ingested, inhaled, or ignited. These compounds may be encountered at a clandestine laboratory, or through a homemade bomb or tankard leakage (e.g., ether, alcohol, nitroglycerin, ammonium sulfate, red phosphorus, cleaning supplies, gasoline, or unlabeled chemicals). Clean/sanitize The process of removing biological and/or chemical contaminants from tools and/or equipment (e.g., using a mixture of 10-percent household bleach and water). Collect/collection The process of detecting, documenting, or retaining physical evidence. Comparison samples A generic term used to describe physical material/ evidence discovered at crime scenes that may be compared with samples from persons, tools, and physical locations. Comparison samples may be from either an unknown/questioned or a known source.

Samples whose source is unknown/questioned are of three basic types: 1. Recovered crime scene samples whose source is in question (e.g., evidence left by suspects, victims). Questioned evidence that may have been transferred to an offender during the commission of the crime and taken away by him or her. Such questioned evidence can be compared with evidence of a known source and can thereby be associated/linked to a person/ vehicle/tool of a crime. Evidence of an unknown/questioned source recovered from several crime scenes may also be used to associate multiple offenses that were committed by the same person and/or with the same tool or weapon. Samples whose source is known are of three basic types: 1. Amd 890fx drivers for mac.