Diffusion: Incredibly Good particles measuring underneath 0.1 micron get bounced about randomly and therefore are slowed by their interactions with atmospheric atoms and molecules. They finally drift or get bounced into a filter fiber, whereupon (all over again) they adhere inside of a approach termed diffusion. ฝุ่นละออง, เชื้อรา, ละอองเกสร และแบคทีเรีย https://www.mannature.com