Winds of change? Company looks at weather's effect on ball
The wind blowing out at Wrigley Field. The tricky breeze in San Francisco. The heat in Los Angeles.
Jul 9, 2020
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Other
Page 7 - News tagged with fluid
Computer Sciences
3-D simulations of sneezing, coughing help motivate social distancing
Not convinced yet that keeping your distance and wearing a mask is worth the trouble? Perhaps scientific evidence to the contrary will help.
May 14, 2020
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Engineering
Engineers streamline jet engine design
Anyone who looks to the stars also dreams of going to space. Turning this dream into reality depends on countless technological advances. One of these is new rocket and aircraft engines, which are becoming easier and cheaper ...
Feb 7, 2020
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Energy & Green Tech
Supporting structures of wind turbines contribute to wind farm blockage effect
Offshore wind power generation has become an increasingly promising source of renewable energy. Much about the aerodynamic effects of larger wind farms, however, remains poorly understood. New work in this week's Journal ...
Dec 12, 2019
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Hi Tech & Innovation
Bloodhound's 461-mph speed is big but team eyes bigger record ahead
The Bloodhound, the darling of The Bloodhound LSR jet car project, has good reason to be praised as a speed rockstar, with speed now at 461mph (741km/h).
Energy & Green Tech
Leaner, cleaner diesel engines
Diesel engines are widely used in transport the world over. Regulatory and legal efforts are afoot to reduce their use in some countries because of concerns about pollution. However, they are likely to remain a mainstay of ...
Jul 30, 2019
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Software
Flexible user interface distribution for ubiquitous multi-device interaction
KAIST researchers have developed mobile software platform technology that allows a mobile application (app) to be executed simultaneously and more dynamically on multiple smart devices. Its high flexibility and broad applicability ...
Jul 19, 2019
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Robotics
Robot control system for grasping and releasing objects under both dry and wet conditions
Industrial robots are now widely used and are indispensable in car manufacturing and in other fields. Conventional robot hands are suitable for grasping hard objects of fixed form, whereas it is not easy to grasp complicated ...
Jul 16, 2019
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Engineering
300-year-old piston design reinvented with soft flexible materials
Since their invention in the late 1700s when French-born British physicist Denis Papin, the inventor of the pressure cooker, proposed the piston principle, pistons have been used to harness the power of fluids to perform ...
Jun 6, 2019
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Robotics
EuMoBot: Replicating euglenoid movement in a soft robot
Swimming is a form of locomotion employed by many organisms across a wide range of scales in nature. Microorganisms with small mass that encounter dominance of viscous forces in the medium require a change in shape that does ...
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.
This text uses material from Wikipedia, licensed under CC BY-SA
