Diffusion: Quite great particles measuring beneath 0.one micron get bounced close to randomly and are slowed by their interactions with atmospheric atoms and molecules. They inevitably drift or get bounced into a filter fiber, whereupon (over again) they stick within a method identified as diffusion. ฝุ่นละออง, เชื้อรา, ละอองเกสร และแบคทีเรีย ดักจับฝุ่น https://www.mannature.com