Diffusion: Very Great particles measuring down below 0.1 micron get bounced all over randomly and therefore are slowed by their interactions with atmospheric atoms and molecules. They at some point drift or get bounced into a filter fiber, whereupon (yet again) they adhere inside a process identified as diffusion. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท waiting for link from Social Network Posts (31)