CSI

By Ethanhor
  • 700 BCE

    First case of fingerprinting

    they found thumb prints in clay pots
  • 250 BCE

    First lie detector

    Erasistratus, created the first lie detector test when he noted that his patients' pulse rate appeared to increase when they lied.
  • 44 BCE

    First autopsy

    He looked at Julis Ceaser body and found out of the 23 stab wound only one was fatal.
  • 1248

    Medical Knowledge

    The first documentation of medical knowledge aimed at solving crimes was recorded in the book "Hsi Duan Yu" (the Washing Away of Wrong). It detailed the process of distinguishing drowning from strangulation.

  • Poison and toxicology

    Investigators at Scotland Yard conducted bullet comparisons. Following these advancements, investigators developed successful tissue tests that identified arsenic murder.

  • Find time of death

    forensic science expanded to include technologies like body temperature to determine time of death

  • portable polygraph machine

  • detect gunshot residue

  • DNA analysis

    Other critical discoveries of this time include voiceprint identification technologies, development of an acid phosphatase test for semen detection and early DNA analysis.