# Humans as Source of Particles

| Here a few examples of humans as source of particles. The magnification is typically low; even particles not visible under these conditions would be deadly
| Dirt on a necklace | Tip of a ball point writer | A piece of nail polish on a 256 k DRAM chip
| Hair with hair spray | Inside of finger ring | Flakes of skin

With frame

4.3.1 Cleanrooms, Particles and Contamination

© H. Föll (Semiconductor Technology - Script)