Assertion: siphon | /r/AtLocation | both air pressure
Facets:
value: for siphons in vacuum
type: TRANSITIVE-OBJECT
value: in a partial vacuum
type: LOCATION
Source sentences:
text: In 1948, Malcolm Nokes investigated siphons working in both air pressure and in a partial vacuum, for siphons in vacuum he concluded that: "The gravitational force on the column of liquid in the downtake tube less the gravitational force in the uptake tube causes the liquid to move.