Reference Terms
from Wikipedia, the free encyclopedia


Viscosity is a measure of the resistance of a fluid to deformation under shear stress.

It is commonly perceived as "thickness", or resistance to pouring.

Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction.

Thus, water is "thin", having a low viscosity, while vegetable oil is "thick" having a high viscosity.

Note:   The above text is excerpted from the Wikipedia article "Viscosity", which has been released under the GNU Free Documentation License.
Related Stories

Matter & Energy News
May 29, 2017

Latest Headlines
updated 12:56 pm ET