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by Eike Blohm, MD FATAL ENCOUNTERS WITH POLICE OCCUR in the U.S. with disturbing frequency, setting us apart from other Western industrial nations. A recent study published in the Annual Review of Criminology explores the drivers behind this American exce

Loaded on May 15, 2023 by Jordan Arizmendi published in Criminal Legal News June, 2023, page 46
Filed under: junk science, Blood Samples/Tests. Location: United States of America.

by Jordan Arizmendi

In a study by AIP Publishing in Physics of Fluids researchers from the University of Chicago and Iowa State University developed an explanation as to how a short-range shooter may stay completely clean of any drops of blood.

Whenever a forensics team is evaluating a crime scene, the blood back splatter caused by the “turbulent vortex ring” caused by a gunshot, will push the blood droplets back to the victim. However, according to the author of the study, Alexander Yarin, “Droplets are also deflected aside, and our predictions showed that some can even land behind the victim, even though initially they were moving from the victim toward the shooter.”

The discovery might lend credence to the inexplicable courtroom puzzle as to how a short-range shooter may stay clean of any drops of blood. According to the research, the gases that emit from a firing gun interact with blood droplets in various yet predictable ways.

“The results reveal the usefulness of multiphase flow fluid mechanics for the forensic discipline of back spatter analysis,” said Yarin.

Source: forensicmag.com

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  1. The Evolving Science, Skepticism, and Limited Evidentiary Value of Firearm and Toolmark Identification, by Douglas Ankney
  2. Op-Ed: Fix the First Step Act and Let Reformed Prisoners Out From Behind Bars – Time Credits and the Irrebuttable Presumption Doctrine, by Christopher Cobb
  3. Beyond Rehabilitation: Personal Achievement and Selfless Service as Grounds for Federal Compassionate Release, by James Lockhart, Luke Sommer
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  5. Oregon Supreme Court: Right to Counsel Violated by Police Questioning Defendant About an Uncharged Crime in Connection With Charged Crime for Which Defendant Represented by Counsel, by Mark Wilson
  6. Idaho Supreme Court: Confession Obtained in Violation of Miranda Inadmissible in State’s Case in Chief but May Be Used for Impeachment Purposes Where Defendant’s Will Was Not ‘Overborne’ During Interrogation, by Douglas Ankney
  7. Ohio Supreme Court: Good-Faith Exception to Exclusionary Rule Inapplicable to Warrant Based on Affidavit Stating Cellphones Found at Scene of Traffic Crash ‘May’ Contain Evidence, by Anthony Accurso
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  10. New York Court of Appeals Announces When an Alternate Juror Is ‘Discharged’ and no Longer ‘Available for Service’, by Douglas Ankney
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  13. Washington Supreme Court Announces Adoption of ‘Rule of Automatic Reversal’ When Prosecutor Flagrantly Appeals to Racial and Ethnic Bias During Voir Dire, by Mark Wilson
  14. Fourth Circuit Reinstates Relief From Death Penalty, Citing State’s Forfeiture of Argument Against Relief, by Dale Chappell
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  20. by Eike Blohm, MD FATAL ENCOUNTERS WITH POLICE OCCUR in the U.S. with disturbing frequency, setting us apart from other Western industrial nations. A recent study published in the Annual Review of Criminology explores the drivers behind this American exce, by Jordan Arizmendi
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