Information for "Fluid"

Basic information

Display titleFluid
Default sort keyFluid
Page length (in bytes)4,048
Page ID10915
Page content languageEnglish

{{#invoke:Hatnote|hatnote}} {{#invoke:Hatnote|hatnote}} {{ safesubst:#invoke:Unsubst||$N=Unreferenced |date=__DATE__ |$B= {{#invoke:Message box|ambox}} }} In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids. Fluids can be defined as substances that have zero shear modulus or in simpler terms a fluid is a substance which cannot resist any shear force applied to it.

Although the term "fluid" includes both the liquid and gas phases, in common usage, "fluid" is often used as a synonym for "liquid", with no implication that gas could also be present. For example, "brake fluid" is hydraulic oil and will not perform its required incompressible function if there is gas in it. This colloquial usage of the term is also common in medicine and in nutrition ("take plenty of fluids").

Liquids form a free surface (that is, a surface not created by the container) while gases do not. The distinction between solids and fluid is not entirely obvious. The distinction is made by evaluating the viscosity of the substance. Silly Putty can be considered to behave like a solid or a fluid, depending on the time period over which it is observed. It is best described as a viscoelastic fluid. There are many examples of substances proving difficult to classify. A particularly interesting one is pitch, as demonstrated in the pitch drop experiment currently running at the University of Queensland.

Fluid sections
Intro  See also  References  

PREVIOUS: IntroNEXT: See also
Page content modelwikitext
Indexing by robotsAllowed
Number of views405
Number of redirects to this page1

Page protection

EditAllow all users
MoveAllow all users

Edit history

Page creatorClueBot NG (Talk | contribs)
Date of page creation15:38, 8 October 2015
Latest editorClueBot NG (Talk | contribs)
Date of latest edit15:38, 8 October 2015
Total number of edits1
Total number of distinct authors1
Recent number of edits (within past 91 days)0
Recent number of distinct authors0