
(from the article `fluid mechanics`) ...these stresses may be. They do so at a rate determined by the fluid`s viscosity. This property, about which more will be said later, is a measure ... ...fixed. Thermal conduction ensures that the layer of air adjacent to the radiator is hotter than the rest of the air, and thermal expansion ensure...
Found on
http://www.britannica.com/eb/a-z/f/40

the pressure exerted by a fluid, directly proportional to the specific gravity at any point and to the height of the fluid above the point.
Found on
https://www.infoplease.com/dictionary/fluid-pressure
No exact match found.