French criminologist who formulated the foundational principle of forensic science, that every contact leaves a trace, known as Locards exchange principle: when two objects come into contact, material transfers between them.
Facts
Birth YearSourced to the subject's own account Death YearSourced to the subject's own account NationalitySourced to the subject's own account Defining ContributionSourced to the subject's own accountFormulated the exchange principle underlying trace evidence analysis: every contact between two objects transfers material between them. 1 Cross-Tradition Connections
Disciplines Pioneered
Trace evidence analysis rests on Locard's exchange principle, that every contact between objects leaves a trace.
Informed
Locard's exchange principle, that every contact leaves a trace, is the reason chain of custody and contamination prevention matter for trace evidence.
Sources
1. Wikipedia: Edmond Locard
Wikipedia: Trace Evidence
Disciplines Pioneered: Trace Evidence Analysis, Opening sectionView the Source EBSCO Research Starters: Locard's Exchange Principle
EBSCO Information ServicesInformed: Chain of Custody, paragraph 4Quote, Informed: Chain of Custody, paragraph 4
Because evidentiary use of exchanged materials depends on there being no acceptable alternative explanation for the materials being where they are, issues of chain of custody and prevention of contamination are extremely important.
Wikipedia: Locard's exchange principle
Informed: Locard's Exchange Principle, opening paragraph, originatorQuote, Informed: Locard's Exchange Principle, opening paragraph, originator
Edmond Locard (1877-1966)...was a pioneer in forensic science who became known as the Sherlock Holmes of Lyon, France
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