Assertion: solid's property | /r/HasProperty | viscosity
Facets:
Source sentences:
text: An important physical property characterizing the flow of liquids is viscosity.
text: Together with post-doctoral associate Eun-Seong Kim, Chan found that when a particular isotope of helium gas has frozen into a crystal at a fraction of a degree above absolute zero, part of it exhibits a property only seen before in superfluids: no friction.