Laman

Thursday, August 29, 2013

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News

NASA's SDO mission untangles motion inside the sun

Posted: 28 Aug 2013 06:11 PM PDT

Using an instrument on NASA's Solar Dynamics Observatory, called the Helioseismic and Magnetic Imager, or HMI, scientists have overturned previous notions of how the sun's writhing insides move from equator to pole and back again, a key part of understanding how the dynamo works. Modeling this system also lies at the heart of improving predictions of the intensity of the next solar cycle.

Space laser to prove increased broadband possible

Posted: 28 Aug 2013 06:11 PM PDT

Scientists are attemping to show two-way laser communication beyond Earth is possible, expanding the possibility of transmitting huge amounts of data. This new ability could one day allow for 3-D high definition video transmissions in deep space to become routine.

Milky Way gas cloud causes multiple images of distant quasar

Posted: 28 Aug 2013 02:31 PM PDT

For the first time, astronomers have seen the image of a distant quasar split into multiple images by the effects of a cloud of ionized gas in our own Milky Way Galaxy. Such events were predicted as early as 1970, but the first evidence for one now has come from the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope system.

Oxygen 'sponge' presents path to better catalysts, energy materials

Posted: 28 Aug 2013 02:28 PM PDT

Scientists have developed a new oxygen "sponge" that can easily absorb or shed oxygen atoms at low temperatures. Materials with these novel characteristics would be useful in devices such as rechargeable batteries, sensors, gas converters and fuel cells.

New Cassini data from Saturn's largest moon Titan indicate a rigid, weathered ice shell

Posted: 28 Aug 2013 10:19 AM PDT

An analysis of gravity and topography data from Saturn's largest moon, Titan, has revealed unexpected features of the moon's outer ice shell. The best explanation for the findings, the authors said, is that Titan's ice shell is rigid and that relatively small topographic features on the surface are associated with large roots extending into the underlying ocean.

Magnetic charge crystals imaged in artificial spin ice

Posted: 28 Aug 2013 10:19 AM PDT

Direct visualization of magnetic charge crystallization in an artificial spin ice material, a first in the study of a relatively new class of frustrated artificial magnetic materials-by-design known as "Artificial Spin Ice." These charges are analogs to electrical charges with possible applications in magnetic memories and devices.

Producing hydrogen from water with carbon/charcoal powder

Posted: 28 Aug 2013 08:42 AM PDT

In the latest advance in efforts to find an inexpensive way to make hydrogen from ordinary water -- one of the keys to the much-discussed "hydrogen economy" -- scientists are reporting that powder from high-grade charcoal and other forms of carbon can free hydrogen from water illuminated with laser pulses.

Butterfly wings + carbon nanotubes = new 'nanobiocomposite' material

Posted: 28 Aug 2013 07:34 AM PDT

Leveraging the amazing natural properties of the Morpho butterfly's wings, scientists have developed a nanobiocomposite material that shows promise for wearable electronic devices, highly sensitive light sensors and sustainable batteries.

Modified law of gravity predicts dwarf galaxy feature prior to observations

Posted: 28 Aug 2013 07:34 AM PDT

MOND, a modified law of gravity, correctly predicted in advance of observations the velocity dispersion -- the average speed of stars within a galaxy relative to each other -- in 10 dwarf satellite galaxies of the Milky Way's giant neighbor Andromeda. MOND also detected subtle differences in gravity fields that dark matter theory says should be uniform.

Using a form of 'ice that burns' to make potable water from oil and gas production

Posted: 28 Aug 2013 07:34 AM PDT

In the midst of an intensifying global water crisis, scientists are reporting development of a more economical way to use one form of the "ice that burns" to turn very salty wastewater from fracking and other oil and gas production methods into water for drinking and irrigation. The method removes more than 90 percent of the salt from the water.

Oldest solar twin identified: New clues to help solve lithium mystery

Posted: 28 Aug 2013 07:33 AM PDT

Astronomers have used ESO's Very Large Telescope to study the oldest solar twin known to date. Located 250 light-years away, the star HIP 102152 is more like the Sun than any other solar twin — except that it is nearly four billion years older. This older twin may be host to rocky planets and gives us an unprecedented chance to see how the Sun will look when it ages.

Matroid theory: Mathematician solves 40-year-old problem

Posted: 28 Aug 2013 06:23 AM PDT

A team of mathematicians has solved a problem first posed more than 40 years ago that has confounded modern mathematicians, until now.

Molecular motors: Power much less than expected?

Posted: 28 Aug 2013 06:20 AM PDT

An innovative measurement method has been used for estimating power generated by motors of single molecule in size, comprising a few dozens atoms only. The findings of the study are of crucial importance for construction of future nanometer machines – and they do not instil optimism.

Computer test reveals high prevalence of attention disorders in stroke patients

Posted: 27 Aug 2013 08:21 AM PDT

A majority of stroke patients have problems paying attention and could be helped by brain-training computer games, a new study suggests.

Do girls really experience more math anxiety?

Posted: 27 Aug 2013 06:17 AM PDT

Girls report more math anxiety on general survey measures but are not actually more anxious during math classes and exams, according to new research.
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)