"Powder burns" refer to the marks or injuries caused by the combustion of gunpowder when a firearm is discharged. These burns typically occur when a gun is fired at close range, resulting in hot gases and debris coming into contact with the skin. The severity of the burn can vary depending on the distance from the muzzle and the type of firearm used. In forensic science, examining powder burns can help determine the distance from which a shot was fired. This information is crucial in criminal investigations, particularly in cases involving firearms, as it can provide insights into the circumstances surrounding a shooting incident involving firearms and forensic evidence.