superfluid(redirected from Fountain effect)
Also found in: Encyclopedia.
A fluid, such as liquid helium, that flows with little or no friction at temperatures close to absolute zero.
su′per·flu·id′i·ty (-flo͞o-ĭd′ĭ-tē) n.
(General Physics) physics a fluid in a state characterized by a very low viscosity, high thermal conductivity, high capillarity, etc. The only known example is that of liquid helium at temperatures close to absolute zero
(General Physics) being or relating to a superfluid
su•per•flu•id(ˌsu pərˈflu ɪd)
a fluid having frictionless flow, high heat conductivity, and other unusual properties: helium below 2.186 K is the only known example.