ABSTRACT
Rheology, from the ancient greek ρ ω (rheo¯, “flow”)` –logy (“study of”), is the study of the flow of matter.
In general, rheology can be described as the study of materials’
deformation occurring over a certain period of time. Indeed, even
when amaterial is subject to a finite deformation, it may appear as if
it were flowing, as long as the observation time falls within the time
window of the process.
