How Does The science of gunshot residue analysis Work?

Gunshot residue analysis is like finding tiny clues left behind when someone fires a gun, it helps detectives figure out who was near the gun when it went boom.

When a bullet is fired, gunpowder explodes inside the gun, and some of that powdery stuff flies out. It lands on the person holding the gun, like confetti at a party, but really tiny and invisible to the eye.

Imagine you're painting a wall with a big brush. When you flick the brush, some paint splatters onto your hand. That’s kind of what happens when someone fires a gun, gunshot residue (GSR) lands on their skin, clothes, or even the nearby surfaces.

Detectives can collect that tiny powder and look at it under special lights or with a microscope. They check for special bits, like little balls made of metals such as lead and antimony, these are like fingerprints left behind by the gunpowder explosion.

Sometimes, detectives use a tape to stick to the person’s hand or clothes, kind of like how you might use sticky notes in school, and then look at what they collected. That helps them figure out if someone was close to the gun when it fired.