# The Air We Breath

| Here is a picture of the actual air we breath; it was assembled by the Max-Planck-Institut für Chemie in Mainz/Germany
|  | What we have are Biological objects (pollen and such) in the first two rows and middle of the third row. A silica particle (from the desert?); left third row; and an unknown particle right, third row. Ash particles in the fourth row. anorganic salt crystals (we think) in the fifth row. .

With frame

4.3.1 Cleanrooms, Particles and Contamination

© H. Föll (Semiconductor Technology - Script)