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  • Phys.org - News and Articles on Science and Technology(... continued page 7)
    after all the internet could out evolve humanity Living things accumulate and reproduce information That s really the driving principle behind life and behind evolution Jan 15 2016 in Internet 93 2 All five bright planets come together in the morning sky For the first time in more than 10 years it will be possible to see all five bright planets together in the sky Around an hour or so before sunrise Mercury Venus Mars Jupiter and Saturn the five planets that have been Jan 15 2016 in Space Exploration 5941 1 Rapid affordable energy transformation possible study says The United States could slash greenhouse gas emissions from power production by up to 78 percent below 1990 levels within 15 years while meeting increased demand according to a new study by NOAA and University of Colorado Jan 25 2016 in Energy Green Tech 2954 29 A planetary quintet is dancing across the skies When the moon is in the seventh house and Jupiter aligns with Mars then peace will guide the planets and love will steer the stars Jan 22 2016 in Space Exploration 472 2 A metal that behaves like water Graphene is going to change the world or so we ve been told Feb 11 2016 in Nanophysics 7261 2 Physicists create first photonic Maxwell s demon Phys org Maxwell s demon a hypothetical being that appears to violate the second law of thermodynamics has been widely studied since it was first proposed in 1867 by James Clerk Maxwell But most of these studies have 14 hours ago in Quantum Physics feature 4554 3 The hideout of the Black Death Historical pathogens survived for more than 4 centuries in Europe Black Death mid fourteenth century plague is undoubtedly the most famous historical pandemic Within only five years it

    Original URL path: http://phys.org/sort/popular/1m/page7.html (2016-02-13)
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  • Phys.org - News and Articles on Science and Technology(... continued page 8)
    Yale University psychologists have developed a mathematical model that provides an answer and also helps to explain why the rest of us are usually nice even to strangers Jan 12 2016 in Social Sciences 455 7 First materials to be woven at the atomic and molecular levels created There are many different ways to make nanomaterials but weaving the oldest and most enduring method of making fabrics has not been one of them until now An international collaboration led by scientists at the U S Department Jan 21 2016 in Materials Science 4788 3 Chiral magnetic effect generates quantum current Scientists at the U S Department of Energy s DOE Brookhaven National Laboratory and Stony Brook University have discovered a new way to generate very low resistance electric current in a new class of materials The discovery Feb 08 2016 in General Physics 3632 1 New invention revolutionizes heat transport Scientists at Aalto University Finland have made a breakthrough in physics They succeeded in transporting heat maximally effectively ten thousand times further than ever before The discovery may lead to a giant leap in Feb 01 2016 in Quantum Physics 367 3 Plasma physicist discusses the Wendelstein 7 X stellarator Researchers from the Max Planck Institute for Plasma Physics IPP produced the first helium plasma in the Wendelstein 7 X stellarator last December Since then they have cleaned the plasma vessel with many more helium discharges Feb 05 2016 in Plasma Physics 250 1 Watching electrons cool in 30 quadrillionths of a second Two University of California Riverside assistant professors of physics are among a team of researchers that have developed a new way of seeing electrons cool off in an extremely short time period Jan 19 2016 in Condensed Matter 1805 2 Physicists create magnetic state in atomic layers

    Original URL path: http://phys.org/sort/popular/1m/page8.html (2016-02-13)
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  • Gravitational waves: Why the fuss? (Update)
    Pole But they later had to admit they made an error Another technique involves detecting small changes in distances between objects Gravitational waves passing through an object distort its shape stretching and squeezing it in the direction the wave is travelling leaving a telltale though miniscule effect Detectors such as LIGO at the centre of Thursday s news and its sister detector Virgo in Italy are designed to pick up such distortions in laser light beams At LIGO scientists split the light into two perpendicular beams that travel over several kilometres to be reflected by mirrors back to the point where they started Any difference in length upon their return would point to the influence of gravitational waves Sources European Space Agency Institute of Physics LIGO Nature Explore further Missing gravitational waves lead to black hole rethink 319 shares feedback to editors 2016 AFP Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 Scientists discover hidden galaxies behind the Milky Way Feb 09 2016 3 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 33 minutes ago Arrows vs plate armor 44 minutes ago Wave impedance of free space 45 minutes ago Work done on a stationary bycicle 48 minutes ago Brainstorming Large scale piezoelectricity generation 2 hours ago free fall acceleration help 2 hours ago More from General Physics Related Stories Missing gravitational waves lead to black hole rethink October 21 2015 Human understanding of galaxies and black holes is being called into question after an 11 year search for mysterious gravitational waves famously predicted by Albert Einstein 100 years ago failed to find anything LISA Pathfinder will pave the way for us to see black holes for the first time December 1 2015 It has been a century since Einstein presented his theory of general relativity but it is still helping us unveil some of the deepest mysteries of the universe Now the LISA pathfinder mission will prepare the way for us Video The hunt is on for gravitational waves December 21 2015 Gravitational waves are tiny distortions of space time caused by some of the most violent cosmic events such as colliding black holes The observation of these ripples of space time requires exquisitely sophisticated new Gravitational wave rumors ripple through science world January 12 2016 Rumors are rippling through the science world that physicists may have detected gravitational waves a key element of Einstein s theory which if confirmed would be one of the biggest discoveries of our time Announcement Thursday on Einstein s gravitational waves February 8 2016 Scientists are set to make a major announcement Thursday on efforts to pinpoint the existence of gravitational waves or ripples of space and time that transport energy

    Original URL path: http://phys.org/news/2016-02-gravitational-fuss.html (2016-02-13)
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  • Absorbing acoustics with soundless spirals
    Feb 11 2016 2 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 38 minutes ago Arrows vs plate armor 49 minutes ago Wave impedance of free space 50 minutes ago Work done on a stationary bycicle 53 minutes ago Brainstorming Large scale piezoelectricity generation 2 hours ago free fall acceleration help 2 hours ago More from General Physics Related Stories Designing an acoustic diode November 1 2013 Most people know about ultrasound through its role in prenatal imaging those grainy grey outlines of junior constructed from reflected sound waves A new technology called an acoustic diode envisioned by researchers New method provides direct SI traceability for sound pressure April 28 2015 Scientists at the National Physical Laboratory NPL the UK s National Measurement Institute have developed an optical method for remotely measuring sound pressure inside a fully anechoic chamber which is the first to Density near zero acoustical metamaterial made in China July 14 2015 When a sound wave hits an obstacle and is scattered the signal may be lost or degraded But what if you could guide the signal around that obstacle as if the interfering barrier didn t even exist Recently researchers One way sound tunnel offers novel way to control acoustic waves September 30 2015 Phys org Scientists have designed and built an acoustic one way tunnel that allows sound to pass through in one direction only while blocking it from passing through in the opposite direction The tunnel is completely New metamaterial manipulates sound to improve acoustic imaging December 16 2015 Researchers from North Carolina State University and Duke University have developed a metamaterial made of paper and aluminum that can manipulate acoustic waves to more than double the resolution of acoustic imaging focus Acoustic tweezers moves cells in three dimensions builds structures January 25 2016 Acoustic tweezers that can move single cells in three dimensions using surface acoustic waves without touching deforming or labeling the cells are possible according to a team of engineers Recommended for you Physicists create first photonic Maxwell s demon February 12 2016 Phys org Maxwell s demon a hypothetical being that appears to violate the second law of thermodynamics has been widely studied since it was first proposed in 1867 by James Clerk Maxwell But most of these studies have Most precise measurement of reactor antineutrino spectrum reveals intriguing surprise February 12 2016 Members of the International Daya Bay Collaboration who track the production and flavor shifting behavior of electron antineutrinos generated at a nuclear power complex in China have obtained the most precise measurement Einstein s waves a 100 year odyssey February 12 2016 When Albert Einstein forged the bedrock theory of modern physics 100 years ago he had no computer no internet no printer ballpoint pens and pocket calculators did not exist and few homes had telephones Engineers develop new flat ultralight lens that could change how cameras are designed February 12 2016 Imagine digital cameras or smartphones without the bulky lenses or eyeglasses

    Original URL path: http://phys.org/news/2016-02-absorbing-acoustics-soundless-spirals.html (2016-02-13)
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  • Trees found to break at near the same wind speed regardless of size or species
    of tree characteristics We question the physical origin of this observation both experimentally and theoretically By combining Hooke s law Griffith s criterion and tree allometry we show that the critical wind speed indeed hardly depends on the height diameter and elastic properties of trees Journal reference Physical Review E Physical Review Letters 1348 shares feedback to editors 2016 Phys org Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 Scientists discover hidden galaxies behind the Milky Way Feb 09 2016 3 GPS tracking down to the centimeter Feb 11 2016 10 A metal that behaves like water Feb 11 2016 2 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 38 minutes ago Arrows vs plate armor 49 minutes ago Wave impedance of free space 50 minutes ago Work done on a stationary bycicle 53 minutes ago Brainstorming Large scale piezoelectricity generation 2 hours ago free fall acceleration help 2 hours ago More from General Physics Related Stories How trees withstand a storm September 12 2011 As Hurricane Katia slowly approaches the East Coast many people are still cleaning up from Hurricane Irene whose high winds last week caused trees to fall leaving millions without power Researchers measure cavitation noise in trees April 17 2013 Phys org A team of researchers from Grenoble University in France has found that under experimental conditions roughly half of the noise created by drying wood is due to cavitation The team made this discovery while Temperature found to be most significant driver of the world s tallest trees January 7 2014 Understanding forest biodiversity and how carbon dioxide is stored within trees is an important area of ecological research The bigger the tree the more carbon it stores and a study in New Phytologist explores global variance Forest canopies buffer against climate change April 29 2015 When temperatures rise and less water falls forests respond Forest canopies can buffer juvenile trees from drought and heat by providing shade for the younger trees below the leaf and needle cover Adult trees have deep Large trees key climate influencers die first in drought September 29 2015 In forests worldwide drought consistently has had a more detrimental impact on the growth and survival of larger trees new research shows In addition while the death of small trees may affect the dominance of trees in Trees employ similar strategies to outcompete their neighbors January 7 2016 How more than 1 000 tree species may occur in a small area of forest in Amazonia or Borneo is an unsolved mystery Their ability to co exist may depend on how trees get along with their neighbors A new study based in part Recommended for you Physicists create first photonic Maxwell s demon February 12 2016 Phys org Maxwell s demon a hypothetical being that appears to violate the second

    Original URL path: http://phys.org/news/2016-02-trees-size-species.html (2016-02-13)
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  • Physics: It's happening inside your body right now
    cells are always flowing along the edge on the walls of these artificial blood vessels said Lam But when they are exposed to the drug they go to the center of the channel and enter the main blood flow Then we discovered that the drugs cause the cells to remodel actin which comprises the skeleton of all mammalian cells The group s overall hypothesis is that the body uses the mechanical properties of these cells to help control their activity and where they are located within the circulation The relative softness or stiffness of the cells which collide constantly with billions of other cells in the bloodstream including red and white blood cells causes the cells to self sort and determines where they end up physically within both the model blood vessels and in the human body The soft cells are always flowing in the middle of the bloodstream while the stiff ones are sequestered on the edges Lam said We believe this is how white blood cells traffic in the body and get to the site of an infection This may be a way that the body very efficiently sorts and directs its white blood cells to get them where they re needed As a next step Lam hopes to study how physical properties affect the movement of hematopoietic stem cells used in bone marrow transplants Once injected intravenously into the body the cells quickly move from the circulation to bone marrow sites where they belong and he believes mechanical properties may also play a role in this homing process Whenever there is a change in some cellular activity or physiological activity we tend to try to explain everything at the genetic level which genes turn off and which genes turn on he said Gene expression is a relatively complex process and our hypothesis is that there are probably a lot of cellular processes that are much simpler and more efficient than the typical paradigm of DNA expression then RNA translation and then protein production A little tweak of a white blood cell s actin will allow it to change from stiff to soft and that small change in and of itself may have profound physiologic consequences and enable it to be transported from one part of the body to another Explore further A turning point in the physics of blood More information Meredith E Fay et al Cellular softening mediates leukocyte demargination and trafficking thereby increasing clinical blood counts PNAS 2016 dx doi org 10 1073 pnas 1508920113 Journal reference Proceedings of the National Academy of Sciences Provided by Georgia Institute of Technology 32 shares feedback to editors Tweet Favorites Email Print PDF Featured Last comments Popular Detection of gravitational waves would open new window on universe Feb 10 2016 58 Gravitational waves detected 100 years after Einstein s prediction Feb 11 2016 144 Scientists discover hidden galaxies behind the Milky Way Feb 09 2016 3 GPS tracking down to the centimeter Feb 11 2016 10 A metal

    Original URL path: http://phys.org/news/2016-02-physics-body.html (2016-02-13)
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  • Chiral magnetic effect generates quantum current
    increases much more dramatically in a static magnetic field You could pull current out of the sea of available quasiparticles continuously It s a pure quantum behavior Li said Separating the two chiral states could also give a new way of encoding information analogous to the zeros and ones of computing And because the chiral state is very stable compared with other electrical states it s much less prone to interference from external influences including defects in the material It could therefore be a more reliable material for quantum computing Li said Kharzeev has some other ideas The resistance of this material drops as the magnetic field strength increases which could open up a completely different route toward achieving something like superconductivity zero resistance he said Right now the materials show at least some reduction in resistance at temperatures as high as 100 Kelvin in the realm of the best high temperature superconductors But there are many different types of Dirac semimetals to experiment with to explore the possibility of higher temperatures or even more dramatic effects Such low resistance materials could help overcome a major limit in the speed of microprocessors by reducing the dissipation of current Kharzeev added In zirconium pentatelluride and other materials that have since been discovered to have the chiral magnetic effect an external magnetic field is required to start reducing resistivity Valla said However we envision that in some magnetic materials the electrical current could flow with little or no resistance in a direction parallel with the material s internal magnetic field That would eliminate the need for external magnetic fields and would offer another avenue for dissipationless transport of electrical current Kharzeev and Li are also interested in exploring unusual optical properties in chiral materials These materials possess collective excitations in the terahertz frequency range which could be important for wireless communications and also in imaging techniques that could improve the diagnosis of cancer Kharzeev said Getting back to his nuclear physics roots Kharzeev added The existence of massless quasiparticles that strongly interact makes this material quite similar to the quark gluon plasma created in collisions at RHIC where nearly massless quarks strongly interact through the exchange of gluons So this makes Dirac semimetals an interesting arena for testing some of the ideas proposed in nuclear physics This research illustrates a deep connection between two seemingly unrelated fields and required contributions from an interdisciplinary team of condensed matter and nuclear physicists said James Misewich the Associate Laboratory Director for Energy Science at Brookhaven Lab and a professor of physics at Stony Brook University who played the central role of introducing the members of this research team to one another We re fortunate to have scientists with expertise in these fields here at Brookhaven and nearby Stony Brook University and the kind of collaborative spirit to make such a project come to fruition he said Explore further Scientists see ripples of a particle separating wave in primordial plasma More information Chiral magnetic effect in

    Original URL path: http://phys.org/news/2016-02-chiral-magnetic-effect-quantum-current.html (2016-02-13)
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  • Earthquake power laws emerge in bamboo chopsticks (w/ video)
    11 2016 10 A metal that behaves like water Feb 11 2016 2 more Phys org on facebook Relevant PhysicsForums posts Zeno s arrow paradox 39 minutes ago Arrows vs plate armor 49 minutes ago Wave impedance of free space 51 minutes ago Work done on a stationary bycicle 53 minutes ago Brainstorming Large scale piezoelectricity generation 2 hours ago free fall acceleration help 2 hours ago More from General Physics Related Stories Laboratory experiments reproduce statistical behavior of earthquakes February 21 2013 Mechanical failure of materials is a complex phenomenon underlying many accidents and natural disasters ranging from the fracture of small devices to earthquakes Despite the vast separation of spatial temporal energy Interpreting the strongest deep earthquake ever observed December 4 2013 Massive earthquakes that strike deep within the Earth may be more efficient at dissipating pent up energy than similar quakes near the surface according to new research by Wei et al The authors analyzed the rupture of the The rarity of huge aftershocks like the ones in Nepal May 15 2015 The 7 3 magnitude earthquake that hit Nepal on May 12 just weeks after the devastating 7 8 magnitude event should be classed as an aftershock rather than a second earthquake Although there are relatively few examples of Building collapse during earthquake aftershocks May 28 2015 Earthquakes kill but their aftershocks can cause the rapid collapse of buildings left standing in the aftermath of the initial quake Research published in the International Journal of Reliability and Safety offers a new Study offers explanation for earthquakes setting off distant quakes September 22 2015 Phys org A team of researchers with Second University of Naples has developed a model that may help explain how it is that some earthquakes set off other earthquakes up to a thousand miles away In their paper published Natural or manmade quakes New technique can tell the difference December 16 2015 A new study by Stanford researchers suggests that earthquakes triggered by human activity follow several indicative patterns that could help scientists distinguish them from naturally occurring temblors Recommended for you Physicists create first photonic Maxwell s demon February 12 2016 Phys org Maxwell s demon a hypothetical being that appears to violate the second law of thermodynamics has been widely studied since it was first proposed in 1867 by James Clerk Maxwell But most of these studies have Most precise measurement of reactor antineutrino spectrum reveals intriguing surprise February 12 2016 Members of the International Daya Bay Collaboration who track the production and flavor shifting behavior of electron antineutrinos generated at a nuclear power complex in China have obtained the most precise measurement Einstein s waves a 100 year odyssey February 12 2016 When Albert Einstein forged the bedrock theory of modern physics 100 years ago he had no computer no internet no printer ballpoint pens and pocket calculators did not exist and few homes had telephones Engineers develop new flat ultralight lens that could change how cameras are designed February

    Original URL path: http://phys.org/news/2016-01-earthquake-power-laws-emerge-bamboo.html (2016-02-13)
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