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Forensic Advances of the 21st century
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Karl Landsteiner discovers different human blood types
Karl Landsteiner came up with these findings in the early 1900s, however his findings weren't recognized as truthful until the 1920s. The majority of his work was accomplished in New York because laboratory access was greater there than his home in Vienna. Because of this factor he found the blood types we know today, A, B, AB, and O and also revealed that transfusions could be made from people with the same blood types. -
New York State Prison
This U.S. prison was the first to use fingerprints for identification of the inmates.
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Ability to determine postmortem and antemortem drowning
Revenstorf found a way that diatoms could be useful in determining if someone drowned while they were still alive or not. -
Victor Balthazard's Contributions to Forensics
pictureBalthazard published the first comprehensive hair study, and used enlarged photographs of bullets and cartridge cases to find the weapon they were fired from. He was also the first to try linking a bullet to the weapon it was fired from. -
J.J. Thomson's Invention
pictureThomson built the first mass spectrometer, called the hyperbola spectrograph. This device detects chemicals in gas form that could mean death by inhilation. -
Leone Lattes's discovery
pictureLattes was a professor at the Institute of Forensic Medicine in Italy. He developed the first antibody test for blood groups. He also published a book dealing with hertability, patenity, and typing of dried stains. -
Luke May's Findings
pictureMay was one of the first American criminalists who pioneered striation analysis. This is the comparison of tool marks under a microscope so that they could be matched up to marks at the crime scene. He later published an article in The American Journal of Police Science over identifying some tools -
John Larson and Leanord Keeler's polygraph
pictureLarson and Keeler designed the first portable polygraph, a device that measured blood pressure, pulse, and respiration to determine if someone was tellin the truth or not. -
Poole's frontal sinus pattern
picturePoole finds that frontal sinus patterns are different between each person, even in the case of identical twins. This heled support the idea of positive identification by frontal sinus pattern that was suggested in 1920 by Schuller. -
Frank Lundquist
Lundquist developed the acid phosphatase test for semen. -
De Saram
Saram publishes measurements and temperature in conrol cases from executed prisoners to lead the start of determining time since death from body cooling. -
Y. Tsuchihashi and T. Suzuki study
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These men studied lip print of 1,364 people from a Tokyo University. They found that lip prints are unique to each individual just like fingerprints. -
Gunshot Residue
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J.E. Wessel and others from the Areospace Corporation of the U.S. first used electron miscroscopy with electron dispersive X-ray technology to detect gunshot residue. -
FBI develops AFIS
AFIS stands for Automated Fingerprint Identification System. The FBI made the first computerized scans of fingerprints that was the beginning of AFIS. -
Gary Dotson Case
Gary Dotson was tried and found guilty for a rape crime. He was given a sentence of 25-30 years. With DNA evidence becoming more common around this time however, his sentence was overturned having served 8 years already.
