ScienceDaily: Top Technology News |
- Why is the Sun's atmosphere so much hotter than its surface? Nanoflares
- On-chip topological light: First measurements of transmission and delay
- Heavy metals and hydroelectricity
- 'Active' surfaces control what's on them: Scientists develop treated surfaces that can actively control how fluids or particles move
- Explaining the fascinating shape of freezing droplets
- 'Wetting' a battery's appetite for renewable energy storage: New liquid alloy electrode improves sodium-beta battery performance
- Companion planets can increase old worlds' chance at life
- Light pulses control graphene's electrical behavior
- Preterm children do not have an increased risk for dyscalculia, new research suggests
- Rosetta's comet: Imaging the coma
- NASA announces Mars 2020 rover payload to explore the Red Planet as never before
- Superconductors: Physical link to strange electronic behavior
- Corrosion lab tests suggest need for underground gas tank retrofits
- Chemists create nanofibers using unprecedented new method, reminiscent of fibers found in living cells
- Asteroid impacts significantly altered ancient Earth
- Fermi satellite detects gamma-rays from exploding novae: Surprising discovery dispels long-held idea
- Pressure probing potential photoelectronic manufacturing compound
- A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingers
- In high-stakes soccer, goalkeepers exhibit 'gambler's fallacy'
- Innovative scientists update old-school pipetting with new-age technology
| Why is the Sun's atmosphere so much hotter than its surface? Nanoflares Posted: 01 Aug 2014 02:11 PM PDT Scientists have recently gathered some of the strongest evidence to date to explain what makes the sun's outer atmosphere so much hotter than its surface. The new observations of the small-scale extremely hot temperatures are consistent with only one current theory: something called nanoflares -- a constant peppering of impulsive bursts of heating, none of which can be individually detected -- provide the mysterious extra heat.       |
| On-chip topological light: First measurements of transmission and delay Posted: 01 Aug 2014 02:11 PM PDT First came the concept of topological light. Then came images of topological light moving around a microchip. Now full measurements of the transmission of light around and through the chip.  |
| Heavy metals and hydroelectricity Posted: 01 Aug 2014 07:50 AM PDT Hydraulic engineering is increasingly relied on for hydroelectricity generation. However, redirecting stream flow can yield unintended consequences. Researchers from the U.S. and Peru have documented the wholesale contamination of the Lake JunÃn National Reserve by acid mine drainage from the Cerro de Pasco mining district.  |
| Posted: 01 Aug 2014 07:50 AM PDT Researchers have developed a new way of making surfaces that can actively control how fluids or particles move across them. The work might enable new kinds of biomedical or microfluidic devices, or solar panels that could automatically clean themselves of dust and grit.  |
| Explaining the fascinating shape of freezing droplets Posted: 01 Aug 2014 07:43 AM PDT A water droplet deposited onto an icecold surface clearly has more effect than a drop in the ocean: the droplet will freeze in a peculiar way, forming a pointy tip. Scientists have found an explanation for this remarkable shape. Insight into this process is also useful for understanding processes like 3-D printing.  |
| Posted: 01 Aug 2014 07:42 AM PDT A new liquid metal alloy enables sodium-beta batteries to operate at lower temperatures, which could help the batteries store more renewable energy and strengthen the power grid.  |
| Companion planets can increase old worlds' chance at life Posted: 01 Aug 2014 06:12 AM PDT Having a companion in old age is good for people -- and, it turns out, might extend the chance for life on certain Earth-sized planets in the cosmos as well. Planets cool as they age. Over time their molten cores solidify and inner heat-generating activity dwindles, becoming less able to keep the world habitable by regulating carbon dioxide to prevent runaway heating or cooling.  |
| Light pulses control graphene's electrical behavior Posted: 01 Aug 2014 06:12 AM PDT Graphene, an ultrathin form of carbon with exceptional electrical, optical, and mechanical properties, has become a focus of research on a variety of potential uses. Now researchers have found a way to control how the material conducts electricity by using extremely short light pulses, which could enable its use as a broadband light detector. These findingsx could allow ultrafast switching of conduction, and possibly lead to new broadband light sensors.  |
| Preterm children do not have an increased risk for dyscalculia, new research suggests Posted: 01 Aug 2014 06:11 AM PDT Preterm children do not suffer from dyscalculia more often than healthy full-term children, experts say, contrary to previous studies. Unlike most other studies, the researchers took the children's IQ into consideration.  |
| Rosetta's comet: Imaging the coma Posted: 01 Aug 2014 05:44 AM PDT Less than a week before Rosetta's rendezvous with comet 67P/Churyumov-Gerasimenko, images obtained by OSIRIS, the spacecraft's onboard scientific imaging system, show clear signs of a coma surrounding the comet's nucleus. A new image from July 25, 2014, clearly reveals an extended coma shrouding 67P's nucleus.  |
| NASA announces Mars 2020 rover payload to explore the Red Planet as never before Posted: 01 Aug 2014 05:41 AM PDT The next rover NASA will send to Mars in 2020 will carry seven carefully-selected instruments to conduct unprecedented science and exploration technology investigations on the Red Planet.  |
| Superconductors: Physical link to strange electronic behavior Posted: 31 Jul 2014 05:16 PM PDT Scientists have new clues this week about one of the baffling electronic properties of the iron-based high-temperature superconductor barium iron nickel arsenide. Scientists have the first evidence, based on sophisticated neutron measurements, of a link between magnetic properties and the material's tendency, at sufficiently low temperatures, to become a better conductor of electricity in some directions than in others.  |
| Corrosion lab tests suggest need for underground gas tank retrofits Posted: 31 Jul 2014 12:00 PM PDT A hidden hazard lurks beneath many of the roughly 156,000 gas stations across the United States. The hazard is corrosion in parts of underground gas storage tanks -- corrosion that could result in failures, leaks and contamination of groundwater, a source of drinking water. In recent years, field inspectors in nine states have reported many rapidly corroding gas storage tank components such as sump pumps.  |
| Posted: 31 Jul 2014 12:00 PM PDT Researchers have developed a novel method for creating self-assembled protein/polymer nanostructures that are reminiscent of fibers found in living cells. The work offers a promising new way to fabricate materials for drug delivery and tissue engineering applications.  |
| Asteroid impacts significantly altered ancient Earth Posted: 31 Jul 2014 12:00 PM PDT New research shows that more than four billion years ago, the surface of Earth was heavily reprocessed as a result of giant asteroid impacts. A new model based on existing lunar and terrestrial data sheds light on the role asteroid bombardments played in the geological evolution of the uppermost layers of the Hadean Earth.  |
| Fermi satellite detects gamma-rays from exploding novae: Surprising discovery dispels long-held idea Posted: 31 Jul 2014 12:00 PM PDT Astronomers have discover very high energy gamma rays being emitted by an exploding star. The surprising discovery dispels the long-held idea that classical nova explosions are not powerful enough to produce such high-energy radiation.  |
| Pressure probing potential photoelectronic manufacturing compound Posted: 31 Jul 2014 11:59 AM PDT Molybdenum disulfide is a compound often used in dry lubricants. Its semiconducting ability and similarity to the carbon-based graphene makes molybdenum disulfide of interest to scientists as a possible candidate for use in the manufacture of electronics, particularly photoelectronics. New work reveals that molybdenum disulfide becomes metallic under intense pressure.  |
| A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingers Posted: 31 Jul 2014 11:58 AM PDT Researchers have shown that BMP and WNT proteins are the so-called 'Turing molecules' for creating embryonic fingers. Findings explain why polydactyly -- the development of extra fingers or toes -- is relatively common in humans, affecting up to one in 500 births, and confirms a fundamental theory first proposed by the founding father of computer science, Alan Turing, back in 1952.  |
| In high-stakes soccer, goalkeepers exhibit 'gambler's fallacy' Posted: 31 Jul 2014 11:57 AM PDT When goalkeepers are pitted against multiple kickers in tense penalty shootouts, their attempts to dive for the ball show a predictable pattern that kickers would do well to exploit. After kickers repeatedly kick in one direction, goalkeepers become increasingly likely to dive in the opposite direction, according to an analysis of all 361 kicks from the 37 penalty shootouts that occurred in World Cup and Union of European Football Associations Euro Cup matches over a 36-year period.  |
| Innovative scientists update old-school pipetting with new-age technology Posted: 30 Jul 2014 10:24 AM PDT A team researchers is bringing new levels of efficiency and accuracy to one of the most essential albeit tedious tasks of bench science: pipetting. Dubbed "iPipet," the system converts an iPad or any tablet computer into a "smart bench" that guides the execution of complex pipetting protocols.  |
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