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Latest John Dabiri Stories

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2011-07-14 07:45:35

By Kathy Svitil, California Institute of Technology The power output of wind farms can be increased by an order of magnitude"”at least tenfold"”simply by optimizing the placement of turbines on a given plot of land, say researchers at the California Institute of Technology (Caltech) who have been conducting a unique field study at an experimental two-acre wind farm in northern Los Angeles County. A paper describing the findings"”the results of field tests conducted by John...

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2010-05-18 08:07:24

The quest to derive energy from wind may soon be getting some help from California Institute of Technology (Caltech) fluid-dynamics expert John Dabiri"”and a school of fish. As head of Caltech's Biological Propulsion Laboratory, Dabiri studies water- and wind-energy concepts that share the theme of bioinspiration: that is, identifying energy-related processes in biological systems that may provide insight into new approaches to"”in this case"”wind energy. "I became inspired...

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2009-12-01 15:00:00

Scientists at the California Institute of Technology have developed a blueprint for a wind farm that borrows techniques from schools of fish. Robert Whittlesey and John Dabiri came up with the concept that could make wind farms more efficient by maximizing power without increasing land usage. Whittlesey and Dabiri said the concept was inspired by the patterns of schooling fish, which they use to conserve energy. "When fish swim, they shed tiny vortices in their wake," said Dabiri. "By...

2009-07-30 16:21:27

Jellyfish and other small swimming marine creatures can have a huge impact on ocean mixing, researchers in California report. Increasingly, scientists have been thinking about the possible role ocean animals may play in larger-scale ocean mixing, the process by which layers of water interact to distribute heat, nutrients and gases throughout the oceans, California Institute of Technology researchers said Thursday in a release. The perspective we usually take is how the ocean -- by its...

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2009-07-29 15:10:00

The ocean's smallest swimming animals, such as jellyfish, can have a huge impact on large-scale ocean mixing, researchers have discovered."The perspective we usually take is how the ocean--by its currents, temperature, and chemistry--is affecting animals," says John Dabiri, a Caltech bioengineer who, along with Caltech graduate student Kakani Katija, discovered the new mechanism. "But there have been increasing suggestions that the inverse is also important, how the animals themselves, via...

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2009-07-29 15:00:00

Underwater creatures, including small swimming animals like jellyfish, play a crucial role in the mixing of ocean waters, scientists reported on Wednesday. Writing in the July 30 issue of the journal Nature, John Dabiri, a Caltech bioengineer and Caltech graduate student Kakani Katija, discovered that both large and small underwater creatures contribute to the process of ocean mixing. "The perspective we usually take is how the ocean--by its currents, temperature, and chemistry--is affecting...

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2009-05-11 13:20:43

"Biomixing" by floating animals churns waters in oceans, seas, lakes If you were to snorkel just before dawn at the popular tropical Pacific destination Jellyfish Lake, you'd have lots of company: millions of golden jellyfish, known to scientists as Mastigias papua, mill around the western half of the lake, waiting for sunrise. With the sun's first rays, Jellyfish Lake, located 550 miles east of the Philippines in the island nation of Palau, comes alive. As the sky brightens in the east, the...

2008-03-04 06:00:10

By Ehrenberg, Rachel Studies of medusan motion reveal secrets of the Earth's first muscle-powered swimmers From the Jetsons to James Bond, flying via jet pack has become an icon of the futuristic way to travel. But jet propulsion is actually older than the Flintstones. It's a standard means of locomotion for jellyfish, the earliest animals to swim the seas using muscles. Jellies have been jet-propelling for at least 550 million years, yet only recently have scientists begun to understand...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.