Mell Who was Dr Eduard Piotrowski?
Dr. Eduard Piotrowski of the University of Kraków published a paper titled “On the formation, form, direction, and spreading of blood stains after blunt trauma to the head.” He conducted his first experiments on rabbits.
When was the earliest known use of blood spatter?
1514: The earliest known use of blood spatter evidence is a trial in London in which defendant, Richard Hunne, had been jailed for heresy and was then convicted of suicide, post mortem.
Is blood spatter a real science?
Bloodstain-pattern analysis has been accepted as reliable evidence by appellate courts in one state after another with little or no examination of its scientific accuracy. Rarely, if ever, have courts required objective proof of bloodstain-pattern analysis’ accuracy.
How long has blood spatter been around?
The roots of bloodstain pattern analysis can be traced back more than 100 years. As the historian for the International Association of Bloodstain Pattern Analysts (IABPA), Herbert Leon MacDonnell has found literature references to bloodshed characteristics dating back to the 1500s.
What Cannot be determined by blood spatter?
Which of the following CANNOT be determined by observing blood spatter? The DNA of the victim. The position of the assailant at the time of the spatter.
What is the difference between blood spatter and splatter?
To spatter means to scatter small particles of a substance. A spatter is the pattern of drops that result from spattering. To splatter means to scatter large particles of a substance. A splatter is the pattern of drops that result from splattering.
Who was the 1st person to describe bloodstains?
The First study of blood spatter analysis came from Dr. Eduard Piotrowski, in 1895 he wrote “Concerning the Origin, Shape, Direction and Distribution of the Bloodstains Following Head Wounds Caused by Blows”. With this writing piece it influenced many investigators in the early 20th century.
Where is Duane Deaver now?
After he was fired from the SBI, Deaver left work in criminal justice. Today, according to his LinkedIn profile, Deaver serves as Director of Operations at ISS Facilities in Texas.
What is blood spatter evidence?
Bloodstains are an important piece of evidence in a forensic examination. The pattern of a stain and the quantity of blood present can be important clues to the nature of the accident or crime. The pattern of a bloodstain can tell a lot about the origin of the blood. …
Can you tell how old dried blood is?
Non-Destructive Age Testing of Bloodstains Raman spectroscopy and advanced statistics allow the researchers to date a blood stain accurately, provided said blood stain is less than two years old. Raman spectroscopy involves shining a laser on a sample and measuring the intensity of scattered light.
What light can detect blood?
One very easy and quick way to detect blood is to use UV light. Reduce the risk of collecting unnecessary stains By using ultraviolet light it is possible to do an effective and quick check for possible bloodstains.
What causes blood spatter?
Blood spatter is categorized as impact spatter (created when a force is applied to a liquid blood source) or projection spatter (caused by arterial spurting, expirated spray or spatter cast off an object).