News tagged with fluid
'Like a jet through solid rock': Volcanic arc fed by rapid fluid pulses
In the depths of the earth, it is anything but peaceful: large quantities of liquids carve their way through the rock as fluids, causing magma to form. A research team led by the University of Münster, ...
Space & Earth / Earth Sciences
29 minutes ago |
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Sound increases the efficiency of boiling
Scientists at the Georgia Institute of Technology achieved a 17-percent increase in boiling efficiency by using an acoustic field to enhance heat transfer. The acoustic field does this by efficiently removing vapor bubbles ...
May 24, 2012 |
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New Digital 'Electronics' Concept May Continue Moore's Law
(PhysOrg.com) -- Computers of the future could be operating not on electrons, but on tiny waves traveling through an electron "fluid," if a new proposal is successful. The new circuit design, recently introduced ...
Nov 05, 2009 |
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Bladeless wind turbine inspired by Tesla
(PhysOrg.com) -- A bladeless wind turbine whose only rotating component is a turbine/driveshaft could generate power at a cost comparable to coal-fired power plants, according to its developers at Solar Aero. ...
Technology / Energy & Green Tech
May 07, 2010 |
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Supercomputing on a cell phone
Many engineering disciplines rely on supercomputers to simulate complicated physical phenomena — how cracks form in building materials, for instance, or fluids flow through irregular channels. Now, researchers ...
Technology / Computer Sciences
Sep 07, 2010 |
4.8 / 5 (15) |
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Can fluid dynamics offer insights into quantum mechanics?
In the first decades of the 20th century, physicists hotly debated how to make sense of the strange phenomena of quantum mechanics, such as the tendency of subatomic particles to behave like both particles ...
Oct 20, 2010 |
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Functionalized graphene oxide plays part in next-generation oil-well drilling fluids
Graphene's star is rising as a material that could become essential to efficient, environmentally sound oil production. Rice University researchers are taking advantage of graphene's outstanding strength, ...
Nanotechnology / Nanomaterials
Dec 08, 2011 |
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Ancient lunar dynamo may explain magnetized moon rocks
The presence of magnetized rocks on the surface of the moon, which has no global magnetic field, has been a mystery since the days of the Apollo program. Now a team of scientists has proposed a novel mechanism ...
Space & Earth / Space Exploration
Nov 09, 2011 |
4.9 / 5 (8) |
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Resident bats use pitcher plant as toilet
(PhysOrg.com) -- The pitcher plants are carnivorous species that usually feed on insects and small vertebrates, but one species has been found that prefers to dine on the feces of bats.
Jan 27, 2011 |
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Exploring the characteristics of viscoelastic fluids
(PhysOrg.com) -- There are many microorganisms out there, navigating through complex biological fluids. “One of the most common migrations takes place with spermatozoa as it navigates the female reproductive tract,” Joseph ...
Feb 04, 2010 |
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Physicists create supernova in a jar (w/ Video)
(PhysOrg.com) -- A team of physicists from the University of Toronto and Rutgers University have mimicked the explosion of a supernova in miniature.
Dec 02, 2010 |
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Microfluidics: Creating chaos
A quiet revolution is taking place in the fields of biology and chemistry. Microfluidic devices, which allow fluid manipulation in micro-scale channels, are slowly but surely finding their place on the lab ...
May 10, 2012 |
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Glucose biofuel cells may soon power implants
(PhysOrg.com) -- Researchers in Grenoble, France have for the first time successfully implanted glucose biofuel cells in living rats. The results suggest such cells may one day use the body’s own glucose and ...
May 19, 2010 |
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Amazing skin gives sharks a push
Shark skin has long been known to improve the fish's swimming performance by reducing drag, but now George Lauder and Johannes Oeffner from Harvard University show that in addition, the skin generates thrust, ...
Feb 09, 2012 |
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Aero-engineers debut open-source fluid dynamics design application
Each fall at technical universities across the world, a new crop of aeronautical and astronautical engineering graduate students settle in for the work that will consume them for the next several years. For many, their first ...
Jan 24, 2012 |
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Fluid
In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress, no matter how small. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.
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 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.
For more information about Fluid, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
