Diffusion: Pretty Great particles measuring down below 0.1 micron get bounced about randomly and they are slowed by their interactions with atmospheric atoms and molecules. They eventually drift or get bounced right into a filter fiber, whereupon (over again) they adhere in the method known as diffusion. ตัวเครื่องอาจค่อนข้างใหญ่ไปสำหรับผู้ใช้บางท่าน Due to waiting for link from Social Network Posts (3)