Forensic Science Develoments

Chinese use fingerprints as identifying markers

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Time of death studies

Mar 19, 1839

English physician John Davey studies corpse heat loss in London

DNA Discovery

Mar 19, 1869

First identified and isolated by Friedrich Miescher at the University of Tubingen

First criminal fingerprint identification

Mar 20, 1892

First lie detector test invented

Mar 21, 1902

inadequate lie detetor invented by James Mckenzie.

Lie Detector made

Mar 21, 1921

First adegaute polygraph made by medical student John Larson.

Breathalyzer Test

Mar 21, 1954

R. F. Borkenstein invents the Breathalyzer for field sobriety testing.

First Pyschological Profile Offered

Mar 21, 1970

Teten Mullany offers the first pyschological profile on the killer of a woman in her home. Solves the murder.