| http://www.w3.org/ns/prov#value | - I guess this further improves the suction effect by further speeding up the airflow. (high pressure moves to low pressure; I learned that in some science class in high school or college ) here is a link that explains the diffuser and has a little picture of a "simple diffuser: http://www.scarbsf1.com/diffuser.html Yes, that is me in my avatar!
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