News tagged with fluid
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 |
4.4 / 5 (120) |
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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 |
4.5 / 5 (78) |
12
Jackson Pollock, artist and physicist?
At a glance, a painting by Jackson Pollock (1912 - 1956) can look deceptively accidental: just a quick flick of color on a canvas.
Jun 28, 2011 |
1.2 / 5 (148) |
20
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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 |
4.8 / 5 (29) |
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New process cleanly extracts oil from tar sands and fouled beaches
(PhysOrg.com) -- A new, more environmentally friendly method of separating oil from tar sands has been developed by a team of researchers at Penn State. This method, which utilizes ionic liquids to separate ...
Mar 18, 2011 |
4.8 / 5 (24) |
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Bouncing water droplets reveal small-scale beauty (w/ Video)
In the video below, scientists have captured the simple movements of water droplets on a superhydrophobic carbon nanotube surface. The video shows the water droplets as they bounce, slide, and roll across ...
Oct 14, 2010 |
5 / 5 (15) |
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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) |
1
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Electrons on the brink: Fractal patterns may be key to semiconductor magnetism (w/ Video)
(PhysOrg.com) -- Just as the heartbeats of today's electronic devices depend on the ability to switch the flow of electricity in semiconductors on and off with lightning speed, the viability of the "spintronic" ...
Feb 05, 2010 |
4.4 / 5 (16) |
2
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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 |
4.9 / 5 (14) |
1
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Engineer Discovers Why Particles Like Flour Disperse on Liquids
(PhysOrg.com) -- Even if you are not a cook, you might have wondered why a pinch of flour (or any small particles) thrown into a bowl of water will disperse in a dramatic fashion, radiating outward as if it ...
Nov 16, 2009 |
4.3 / 5 (15) |
2
Solving Teapot Effect
(PhysOrg.com) -- A team of scientists from France have worked out why teapots dribble at low flow rates, and how to stop them. The effect is called the "teapot effect", and solving it could finally put an ...
Nov 02, 2009 |
4.9 / 5 (12) |
10
Whale-inspired ocean turbine blades
Interest in developing alternative energy sources is driving the consideration of a promising technology that uses underwater turbines to convert ocean tidal flow energy into electricity.
Nov 28, 2010 |
4.8 / 5 (11) |
3
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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 |
4.8 / 5 (10) |
2
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Scientists discover rigid structure in centre of turbulence
Pioneering mathematical engineers have discovered for the first time a rigid structure which exists within the centre of turbulence, leading to hope that its chaotic movement could be controlled in the future.
May 05, 2009 |
4.3 / 5 (10) |
3
Researchers kick-start ancient DNA
Binghamton University researchers recently revived ancient bacteria trapped for thousands of years in water droplets embedded in salt crystals.
Nov 22, 2010 |
4.4 / 5 (9) |
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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.
