Tag: alternate light sources

Visible vs. Invisible Trace Evidence: How Forensic Experts Find the Unseen

Visible vs. Invisible Trace Evidence: How Forensic Experts Find the Unseen

Explore the critical differences between visible and invisible trace evidence in forensics, from Locard's principle to the use of UV light and microspectrometry.

Alternate Light Sources: Finding Fingerprints with ALS in Forensic Investigations

Alternate Light Sources: Finding Fingerprints with ALS in Forensic Investigations

Alternate Light Sources (ALS) reveal invisible fingerprints and trace evidence using specific wavelengths of light. Used in forensics, ALS finds prints on plastic, metal, and porous surfaces where powder fails - transforming how crime scenes are processed.

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chain of custody lab accreditation forensic documentation trace evidence biohazard cleanup forensic science forensic DNA crime scene investigation forensic evidence forensic toxicology criminal profiling forensic ballistics bloodstain patterns drug testing forensic photography expert testimony forensic pathology homicide investigation evidence preservation fingerprint analysis

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