Where is Physical Evidence found and collected?
Physical
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The process of examination of physical evidence starts by understanding where it was found and why it was found there. Then you must assess what lead to it's being found in that location and if there was a possible motive.
Three examples of physical evidence include a weapon used in a crime, DNA recovered from a crime scene, and fingerprints found on a surface.
Physical evidence refers to tangible objects or traces left at a crime scene. Common examples include weapons, clothing, fingerprints, and DNA evidence. These items are collected, analyzed, and used to link suspects to crimes or exonerate individuals.
DNA evidence can be collected from sperm found on clothing for a significant period of time, as long as the sample is properly preserved. DNA degradation can start to occur after a few weeks to a few months, depending on storage conditions such as temperature, humidity, and exposure to light. It is best to collect and preserve DNA evidence as soon as possible after a crime to ensure its reliability for forensic analysis.
Physical evidence at a crime scene is collected using techniques like photography, sketching, and proper packaging to prevent contamination. It is essential to document the item's location, take measurements, and use protective gear to avoid compromising the evidence. Chain of custody procedures must be followed to ensure the integrity of the evidence for court presentation.
Evidence and witnesses are only as good as the lawyers questioning them or presenting evidence. Both can be reliable or found unreliable.
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Is the identification and continued safe possession of physical evidence from the moment it has been found to when it is accepted as evidence in court.
"When it comes to a crime scene investigation, the events that take place are recognition of the crime scene, documentation of the scene, finding of the evidence, collection of the evidence, and finally analyzing all of the evidence collected."