crime scene investigation team at the scene of a crime or accident One of the most important pieces of evidence he pays attention to is undoubtedly bloodstains. We all know about the efforts to find out who belongs to bloodstains through DNA analysis, but there are many more clues we can glean from the stains.

As you discover clues, including a bloodstain how to use math Before we go into detail, let’s take a look at the information on “Bloodstain Pattern Analysis” (BPA) in Forensics.

What does the crime scene bloodstain pattern analysis reveal?

• Whether the wounds on the bodies of the injured or the deceased are compatible.
• The origin and origin of the event.
• What kind of blow or blows are used, the number of blows and the direction of the blow.
• Shooting distance for deaths or injuries caused by firearms.
• Properties of the object used in the event.
• The actions of the victim and the perpetrator during and after the incident.
• The location of the deceased or injured person and the perpetrator in relation to each other and other objects on the scene.
• Whether the crime scene has subsequently been changed.
• Supporting or rejecting the statements of the victim, accused or witness during the investigative phase.

The angle at which the blood hits the ground is calculated using math.

Angle of the blood drop when it hits the target is the impact angle. This angle can vary from 1 degree, which is the smallest acute angle, to 90 degrees. If the blood falls on a flat surface, it drops to the ground at a 90-degree angle. This blood descending to the ground is a circular drop.

If the blood sinks to the ground at an angle of less than 70 degrees, the drop becomes an elliptical tail occurs. Crime scene investigators measure the width and length of the bloodstain when analyzing it. So how?

Without the help of triangles and trigonometric connections…

Investigate the crime scene, using the right triangle, of the falling blood drop Calculates the angle it makes with the surface. In this calculation, it is assumed that the diameter of the droplet before the blood hits the ground is equal to the diameter after it hits the ground.

This assumption is not entirely correct, but approximate data emerges. After getting the data right triangles and trigonometry Calculates the angle of incidence of blood.

Even Newton plays a part in another method that occupies an important place in forensics!

in math “exponential function” The term called the term refers to processes that depend on the amount of material present as time changes and is often used to calculate the time of death. Body temperature data is used to analyze the estimated time of death.

A corpse continues to cool until it reaches ambient temperature. from Newton “Cooling Law” An exponential function is obtained when the reduced heat is calculated mathematically.

The geo-profiling method that allows the serial killer nicknamed “Jack the Ripper” to find his hometown:

In some cases, the crimes committed may be related. To expose these crimes, information is often gathered from all linked murders. Based on previous criminal records and information collected list of suspects is made and related crime information, the estimated killer’s address is reached.

According to the calculations made with this analysis, one of the most famous serial killers in history, Jack the Ripper Flower and Dean Street in East London He probably lived nearby.

And of course the possibility…

What we all saw in high school when examining evidence related to DNA, blood type, and fingerprints. of conditional probability has been used. Conditional probability is used to determine whether two events related to the crime under investigation are related.

If the conditional probability is ignored, there is a possibility of coming to wrong conclusions about the event. Finally static analysis with similarities and differences.

• Sources: associate. Dr. Faruk Asicioglu – Exp. dr. Murat Nihat Arslan, Journal of Forensic Medicine, Forensic Science Simplified, Mathematical