What is the impact spatter with high velocity?
High Velocity Impact Spatter (HVIS) — A bloodstain pattern caused by a high velocity impact /force to a blood source such as that produced by gunshot or high speed machinery. Low Velocity Impact Spatter (LVIS) — A bloodstain pattern that is caused by a low velocity impact/force to a blood source.
What is the average velocity of high velocity spatter?
100 feet per second
“High velocity” A bloodstain pattern resulting from an object impacting a blood source at 100 feet per second or greater. A typical example is spatter resulting from a gunshot. “Medium velocity” A bloodstain pattern resulting from an object impacting a blood source at roughly 25 feet per second.
How do you make high velocity blood spatter?
High velocity blood spatter is usually caused by a gunshot, it can also be caused by other objects too if enough force is exerted. The force of the blood hitting a surface for high velocity blood spatter is over 100 feet per second. This causes the pattern of the blood to be similar to a fine spray.
What is the key difference between high velocity and low velocity spatter?
Low velocity spatter can also result from pools of blood around the body and transfers. A High velocity spatter is generally caused by a gunshot wound but can be from a wound from another type of weapon if enough force is used. Once the type of velocity is determined it’s important to determine the angle of impact.
What is the fastest free falling blood can travel?
Saturation Pattern – Bloodstain pattern resulting from an accumulation liquid on an absorbent material.
Why is Luminol used?
Luminol is commonly used in forensics as a diagnostic tool for the detection of blood stains. Most crime scene investigation, known as criminalistics, is based on the fact that nothing vanishes without a trace and minute particles of blood will adhere to most surfaces for years.
What type of weapon causes high velocity spatter?
gunshot wound
A High velocity spatter is generally caused by a gunshot wound but can be from a wound from another type of weapon if enough force is used. Once the type of velocity is determined it’s important to determine the angle of impact.
What are the three types of impact spatter?
Types of Stains Bloodstains are classified into three basic types: passive stains, transfer stains and projected or impact stains.
What is the difference between low medium and high velocity spatters?
What’s the difference between 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.
Which is the best definition of high velocity impact spatter?
High Velocity Impact Spatter (HVIS)– A bloodstain pattern caused by a high velocity impact /force to a blood source such as that produced by gunshot or high speed machinery. Impact Pattern– Bloodstain pattern created when blood receives a blow or force resulting in the random dispersion of smaller drips of blood.
How big is a droplet in blood spatter?
The force of the blood hitting a surface for high velocity blood spatter is over 100 feet per second. This causes the pattern of the blood to be similar to a fine spray. Each tiny droplet in a high velocity blood pattern less than 1mm in diameter.
What causes low velocity and high velocity blood spatter?
Low velocity blood spatter: The force of the blood hitting a surface for medium velocity blood spatter is between 5 and 100 feet per second. This causes the droplets of blood to be smaller in diameter, and more like a spray. High velocity blood spatter: High velocity blood spatter is usually caused by a gunshot,…
What causes low velocity impact spatter ( LVIS )?
Impact Site– That point where force encounters a source of blood. Low Velocity Impact Spatter (LVIS)– A bloodstain pattern that is caused by a low velocity impact/force to a blood source. Medium Velocity Impact Spatter (MVIS)– A bloodstain pattern caused