News tagged with velocity

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'Teapot effect' solved

Solving Teapot Effect

Physics / General Physics

created Nov 02, 2009 | popularity 4.9 / 5 (12) | comments 10

(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 ...


Rosetta

Rosetta probe lined up nicely for Earth approach

Space & Earth / Space Exploration

created Oct 28, 2009 | popularity 4.5 / 5 (2) | comments 0

(PhysOrg.com) -- Following the first and primary trajectory correction manoeuvre 22 October, Rosetta is lined up nicely for the approach to Earth. The manoeuvre provided an 8.8 cm/s change in orbital velocity ...


Weather patterns help predict dengue fever outbreaks

Medicine & Health / Diseases

created Oct 26, 2009 | popularity not rated yet | comments 0

High temperatures, humidity and low wind speed are associated with high occurrence of dengue fever according to a study published in the open access journal BMC Public Health.





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A mechanical model of vocalization

Physics / General Physics

created Nov 23, 2009 | popularity not rated yet | comments 0

When people speak, sing, or shout, they produce sound by pushing air over their vocal folds -- bits of muscle and tissue that manipulate the air flow and vibrate within it. When someone has polyps or some other problem with ...


Microwave Meter Measures Moisture and Density of In-Shell Peanuts

Microwave Meter Measures Moisture and Density of In-Shell Peanuts

Biology / Other

created Nov 20, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- A microwave meter that instantaneously measures both moisture and density of in-shell peanuts has been developed by Agricultural Research Service (ARS) scientists, making it easier and faster ...


Hunting for Planets in the Dark

Hunting for Planets in the Dark

Space & Earth / Astronomy

created Nov 19, 2009 | popularity 4.8 / 5 (4) | comments 5

A proposed space mission that aims to measure dark energy could also detect planets that current surveys are unable to find.


Subaru Telescope Spots Strange Spin

Discovery of a Retrograde or Highly Tilted Extrasolar Planet

Space & Earth / Astronomy

created Nov 18, 2009 | popularity 4.8 / 5 (5) | comments 1

Astronomers have found that the extrasolar planet HAT-P-7b has a retrograde or highly tilted orbit. Studying such planets is important in understanding the diversity of planetary systems and assessing current ...


Bacterial 'ropes' tie down shifting Southwest

Bacterial 'ropes' tie down shifting Southwest

Biology / Cell & Microbiology

created Nov 17, 2009 | popularity 4.4 / 5 (5) | comments 0

Researchers from Arizona State University have discovered that several species of microbes (cyanobacteria), at least one found prominently in the deserts of the Southwest, have evolved the trait of rope-building ...


Engineer Discovers Why Particles Like Flour Disperse on Liquids

Engineer Discovers Why Particles Like Flour Disperse on Liquids

Physics / General Physics

created Nov 16, 2009 | popularity 4.3 / 5 (15) | comments 2

(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 ...


Freezing: a phenomenon that 'jumps'

Freezing: a phenomenon that 'jumps'

Nanotechnology / Nanomaterials

created Nov 16, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- The freezing of suspensions of particles is not always a uniform phenomenon; in certain conditions it leads to a modification of the redistribution of particles and the growth of crystals.


Salmon migration mystery explored on Idaho's Clearwater River

Salmon migration mystery explored on Idaho's Clearwater River

Biology / Ecology

created Nov 15, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Temperature differences and slow-moving water at the confluence of the Clearwater and Snake rivers in Idaho might delay the migration of threatened juvenile salmon and allow them to grow larger ...


Exoplanets Clue to Sun's Curious Chemistry

Exoplanets Clue to Sun's Curious Chemistry

Space & Earth / Astronomy

created Nov 11, 2009 | popularity 4.6 / 5 (21) | comments 15

(PhysOrg.com) -- A ground-breaking census of 500 stars, 70 of which are known to host planets, has successfully linked the long-standing "lithium mystery" observed in the Sun to the presence of planetary systems. ...


A bubbling ball of gas

A bubbling ball of gas (w/ Video)

Space & Earth / Space Exploration

created Nov 11, 2009 | popularity 4.9 / 5 (18) | comments 7

The Sun is a bubbling mass. Packages of gas rise and sink, lending the sun its grainy surface structure, its granulation. Dark spots appear and disappear, clouds of matter dart up - and behind the whole thing ...



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