News tagged with turbulence
Radar gun catches predator shredding turbulence in fusion plasma
Recent experiments carried out at the DIII-D tokamak in San Diego have allowed scientists to observe how fusion plasmas spontaneously turn off the plasma turbulence responsible for most of the heat loss in ...
Nov 10, 2011 |
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Stellar winds
(PhysOrg.com) -- The Sun, glowing with a surface temperature of about 5500 degrees Celsius, warms the Earth with its salutary light. Meanwhile the Sun's hot outer layer (the corona), with its temperature of ...
Oct 10, 2011 |
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Scientists warn Spanish cave should remain off the tourist map
(PhysOrg.com) -- The World Heritage listed Altamira Cave at Cantabria in northern Spain, is home to some of the most perfect examples of Paleolithic cave paintings in Europe, but threats posed by tourists ...
Other Sciences / Archaeology & Fossils
Oct 07, 2011 |
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STAR TRAK for October
As the short nights of summer give way to the longer nights of autumn in the Northern Hemisphere, Jupiter will come into view above the southeastern horizon as the sun sets. The huge planet will be much brighter ...
Space & Earth / Space Exploration
Oct 04, 2011 |
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Star formation laws
Take a cloud of molecular hydrogen add some turbulence and you get star formation – that’s the law. The efficiency of star formation (how big and how populous they get) is largely a function of the ...
Sep 26, 2011 |
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40 year old Mariner 5 solar wind problem finds answer - turbulence doesn't go with the flow
(PhysOrg.com) -- Research led by astrophysicists at the University of Warwick has resolved a 40 year old problem with observations of turbulence in the solar wind first made by the probe Mariner Five. The research resolves ...
Space & Earth / Space Exploration
Aug 26, 2011 |
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Wake cloaking simulated in lab - objects move through water without leaving a trace
(PhysOrg.com) -- Metamaterials researchers Yaroslav Urzhumov and David Smith, working at Duke University have built a simulation of an object that can move through water without leaving a trace and claim it's ...
Jul 25, 2011 |
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First ARTEMIS spacecraft successfully enters lunar orbit
(PhysOrg.com) -- The first of two ARTEMIS ("Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon’s Interaction with the Sun") spacecraft is now in its lunar orbit.
Space & Earth / Space Exploration
Jun 29, 2011 |
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The pirouette effect in the chaos of turbulence
(PhysOrg.com) -- The quick mixing of coffee and milk after stirring or the formation of raindrops in clouds: these are just two of many phenomena in which turbulent flows play a decisive role. Researchers ...
Jun 09, 2011 |
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Randomness rules in turbulent flows
It seems perfectly natural to expect that two motorists who depart from the same location and follow the same directions will end up at the same destination. But according to a Johns Hopkins University mathematical ...
Jun 01, 2011 |
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River rises; Northwest wind farms, plants cut back
(AP) -- Wind farms and fossil-fuel power plants in the Pacific Northwest were all but shut down for five hours early Wednesday as the Columbia River basin's hydroelectric generators ran at full capacity and river managers ...
Technology / Energy & Green Tech
May 18, 2011 |
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Propeller turbulence may affect marine food webs
A new study by researchers at the Virginia Institute of Marine Science shows that turbulence from boat propellers can and does kill large numbers of copepods—tiny crustaceans that are an important part of marine food ...
Apr 19, 2011 |
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Stanford engineers put a damper on 'aeroelastic flutter'
(PhysOrg.com) -- Anyone who has ever flown knows the feeling: an otherwise smooth flight gets a little choppy. If you are lucky, the plane skips a few times like a rock across a pond and then settles. For the not-so-lucky, ...
Mar 25, 2011 |
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Study finds new possible risk factor of heart disease
Abnormal heart rate turbulence is associated with an increased risk of heart disease death in otherwise low-risk older individuals, according to a study funded by the National Heart, Lung, and Blood Institute (NHLBI), part ...
Feb 15, 2011 |
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A guide star lets scientists see deep into human tissue
Astronomers have a neat trick they sometimes use to compensate for the turbulence of the atmosphere that blurs images made by ground-based telescopes. They create an artificial star called a guide star and ...
Feb 11, 2011 |
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