http://www.forensicfact.info the ultimate website on forensics Wed, 30 Jul 2008 06:11:36 +0000 http://backend.userland.com/rss092 en Fire investigation, sometimes referred to as origin and cause investigation, is the analysis of fire-related incidents. After firefighters extinguish a fire, an investigation is launched to determine the origin and cause of the fire or explosion. Investigations of such incidents are done using a systematic approach and knowledge of basic ... http://www.forensicfact.info/2008/06/fire-investagation/ Decomposition refers to the reduction of the body of a formerly living organism into simpler forms of matter. The body of a living organism begins to decompose shortly after death. Such decomposition can be simplified in two stages: In the first stage, it is limited to the production ... http://www.forensicfact.info/2008/06/decomposition-2/ A latent fingerprint is an example of a two-dimensional impression. A footwear impression in mud or a tool mark on a window frame is an example of a three-dimensional impression. If it's not possible to submit the entire object containing the impression to the crime lab, a CSI makes a ... http://www.forensicfact.info/2008/06/footwear-impressions-and-tool-marks/ Forensic art is a law enforcement artistic technique used in the identification, apprehension, or conviction of wanted persons.  Forensic art encompasses several disciplines including composite art, image modification, age progression, post-mortem reconstruction and demonstrative evidence. However, composite art is traditionally the most commonly known discipline of forensic art. The art ... http://www.forensicfact.info/2008/06/forensic-art/ Point of Impact / Point of Origin Point of impact is the point of which some object strikes a bloody source. Point of origin is the three diamentional area where a bloody object is struck. Shadowing and Ghosting Shadowing and Ghosting occur when blood is sprayed around a room and there is ... http://www.forensicfact.info/2008/06/point-of-impactorigin-and-shadowing/ Swipe/Wipe Swipe and Wipe are terms used when blood is put onto a surface, wipe’s occur when something that is not blood stained move through a bloody surface. Swipe’s occur when a bloody object moves across a non-bloody object. Transfer Patterns Transfer patterns occur when something bloody is placed on a surface and ... http://www.forensicfact.info/2008/06/transfer-patterns-and-swipewipe/ Blood into Blood, When blood drops fall into a blood drop that already hit a surface, the blood makes a satellite kind of shape. Other drops are usually made from that drop as well. Expiratory blood, Expiratory blood is blood is blood that come out of an air way or passage way as ... http://www.forensicfact.info/2008/06/blood-into-blood-and-expiratory-blood/ Arterial Spurts happens when a victim’s artery is breached or punctured. Because the human heart is a very strong pump the blood is going to be pushed out at a significant amount of speed, that blood deposition it creates is a rather distinctive blood spatter when it hits a vertical surface. Cast off ... http://www.forensicfact.info/2008/05/arterial-spurts-and-cast-off-stains/ The inward spiral search: The CSI starts at the perimeter of the scene and works toward the center. Spiral patterns are a good method to use when there is only one CSI at the scene. The outward spiral search: The CSI starts at the center of scene (or at the body) ... http://www.forensicfact.info/2008/05/types-of-crime-scene-searches/ Ninhydrin Ninhydrin (triketohhydrinedene hydrate) is a staple of law enforcement investigators and has been used for years to reveal latent prints. The object with the supposed latent print is dipped in or sprayed with a ninhydrin solution. Because the reaction between the ninhydrin and the oils of the print is extremely ... http://www.forensicfact.info/2008/05/using-chemistry-to-expose-latent-prints-continued-3/