Phys.org: Phys.org news tagged with: mathematical equations
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en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingersAlan Turing, the British mathematician (1912-1954), is famous for a number of breakthroughs, which altered the course of the 20th century. In 1936 he published a paper, which laid the foundation of computer science, providing the first formal concept of a computer algorithm. He next played a pivotal role in the Second World War, designing the machines which cracked the German military codes, enabling the Allies to defeat the Nazis in several crucial battles. And in the late 1940's he turned his attention to artificial intelligence and proposed a challenge, now called the Turing test, which is still important to the field today.
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BiologyThu, 31 Jul 2014 14:00:03 EDTnews326031856Strange physics turns off laserInspired by anomalies that arise in certain mathematical equations, researchers have demonstrated a laser system that paradoxically turns off when more power is added rather than becoming continuously brighter.
http://phys.org/news322225896.html
PhysicsTue, 17 Jun 2014 12:11:55 EDTnews322225896Why Einstein will never be wrongOne of the benefits of being an astrophysicist is your weekly email from someone who claims to have "proven Einstein wrong". These either contain no mathematical equations and use phrases such as "it is obvious that..", or they are page after page of complex equations with dozens of scientific terms used in non-traditional ways. They all get deleted pretty quickly, not because astrophysicists are too indoctrinated in established theories, but because none of them acknowledge how theories get replaced.
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PhysicsTue, 14 Jan 2014 13:52:53 EDTnews308929959Explained: MatricesAmong the most common tools in electrical engineering and computer science are rectangular grids of numbers known as matrices. The numbers in a matrix can represent data, and they can also represent mathematical equations. In many time-sensitive engineering applications, multiplying matrices can give quick but good approximations of much more complicated calculations.
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TechnologyFri, 06 Dec 2013 09:30:02 EDTnews305543519Imaging electron pairing in a simple magnetic superconductorIn the search for understanding how some magnetic materials can be transformed to carry electric current with no energy loss, scientists at the U.S. Department of Energy's Brookhaven National Laboratory, Cornell University, and collaborators have made an important advance: Using an experimental technique they developed to measure the energy required for electrons to pair up and how that energy varies with direction, they've identified the factors needed for magnetically mediated superconductivity-as well as those that aren't.
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PhysicsSun, 14 Jul 2013 13:00:09 EDTnews293009429Researchers reveal model of Sun's magnetic fieldResearchers at the Universities of Leeds and Chicago have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun.
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Astronomy & SpaceWed, 22 May 2013 13:00:05 EDTnews288435797From eardrums to electromagnetics, researcher hears the problemsA good tool is both robust and accurate; it doesn't break down easily, or give faulty readings or results. This standard applies to everything from a bathroom scale, or vending machine to a sniper rifle. It also rings true for computer code. Industry and agencies use computer code to design products and test research in the digital realm. It cuts down and time and cost, and can allow a design to be tested in a variety of conditions. Teams of scientists and engineers at companies are dedicated to implementing codes that work efficiently and represent reality—codes that are robust and accurate. But sometimes, they get stuck.
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TechnologyWed, 24 Apr 2013 08:12:50 EDTnews286009961On the origins of the Schrodinger equation(Phys.org) —One of the cornerstones of quantum physics is the Schrödinger equation, which describes what a system of quantum objects such as atoms and subatomic particles will do in the future based on its current state. The classical analogies are Newton's second law and Hamiltonian mechanics, which predict what a classical system will do in the future given its current configuration. Although the Schrödinger equation was published in 1926, the authors of a new study explain that the equation's origins are still not fully appreciated by many physicists.
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PhysicsMon, 08 Apr 2013 11:30:01 EDTnews284638321A model predicts that the world's populations will stop growing in 2050Global population data spanning the years from 1900 to 2010 have enabled a research team from the Autonomous University of Madrid to predict that the number of people on Earth will stabilise around the middle of the century. The results, obtained with a model used by physicists, coincide with the UN's downward forecasts.
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Other SciencesThu, 04 Apr 2013 10:49:51 EDTnews284291377Researchers use attenuation between cell towers to measure rainfall(Phys.org)—Researchers in the Netherlands have devised a means to use the attenuation that results with radio signals when rain falls between cellular towers, to measure the amount of rain that falls in an area. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they were able to use cell phone tower data to create an accurate map of rainfall across the Netherlands twice over 12 day periods in 2011.
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EarthTue, 05 Feb 2013 06:50:01 EDTnews279268279Mathematicians show how shallow water may help explain tsunami power(Phys.org)—While wave watching is a favorite pastime of beachgoers, few notice what is happening in the shallowest water. A closer look by two University of Colorado Boulder applied mathematicians has led to the discovery of interacting X- and Y-shaped ocean waves that may help explain why some tsunamis are able to wreak so much havoc.
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PhysicsTue, 18 Sep 2012 17:04:43 EDTnews267206643Disentangling information from photonsTheoretical physicist Filippo Miatto and colleagues from the University of Strathclyde, Glasgow, UK, have found a new method of reliably assessing the information contained in photon pairs used for applications in cryptography and quantum computing. The findings, published in European Physical Journal D, are so robust that they enable access to the information even when the measurements on photon pairs are imperfect.
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PhysicsThu, 12 Jul 2012 12:09:21 EDTnews261313755Novel equations improve image processingA specific class of mathematical equations is helping to solve major challenges in the field, facilitating advanced modelling in a number of applications from climate change to desertification.
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Other SciencesFri, 06 Jul 2012 10:10:01 EDTnews260784453Study shows subway systems develop in remarkably similar ways(Phys.org) -- Visitors to major cities in the world might disagree, but a small group of French and British researchers has found that regardless of city density, structure and other factors, subway systems running in the biggest cites in the world are more alike than not in truly fundamental ways. In their paper published in the Journal of the Royal Society Interface, the team says that all of the large city subway systems in the world grow in a way that share common features - such as the fact that they all have central cores with a branch topology.
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Other SciencesTue, 22 May 2012 08:07:20 EDTnews256892818Healing with mathUnderstanding the way our bodies heal is not as easy as 1, 2, 3. But a Queensland University of Technology (QUT) researcher believes mathematics holds the answers to complex biological problems.
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Other SciencesMon, 23 Apr 2012 09:33:42 EDTnews254392414Classical ideas endure in modern digital culture: studyComputer enhanced images surround us. Flip through any magazine or catch a current film and you will find scores of digitally enhanced images that serve as ideals. According to Radio and Television Arts professor David Tucker, the notion of the ideal has permeated all cultures throughout history, whether reflected in the pursuit of beauty in art, athletic achievement in sport, orderly and just government or mathematical equations based on classical symmetry and golden rules.
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Other SciencesWed, 31 Aug 2011 09:47:56 EDTnews234002842Math wars: Debate sparks anti-pi day(PhysOrg.com) -- A controversial debate in the math world has led to celebrations today by opponents of the mathematical constant pi.
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Other SciencesWed, 29 Jun 2011 05:38:46 EDTnews228544512Genius of Einstein, Fourier key to new humanlike computer vision(PhysOrg.com) -- Two new techniques for computer-vision technology mimic how humans perceive three-dimensional shapes by instantly recognizing objects no matter how they are twisted or bent, an advance that could help machines see more like people.
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TechnologyMon, 20 Jun 2011 16:16:46 EDTnews227805375Virtual laboratory predicts train vibrationsThe construction of new rail lines, or the relocation of old ones underground, has increased society's interest over recent years in the vibrations produced by trains, especially among people who live or work near the tracks. Now a study headed by the Polytechnic University of Valencia (UPV) has made it possible to estimate the trajectory of vibrations from the point at which they are generated (wheel-rail contact) through to the ground.
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TechnologyWed, 09 Feb 2011 10:19:45 EDTnews216469166Researchers use cell 'profiling' to detect abnormalities -- including cancerAn Ohio State University mathematician and his colleagues are finding ways to tell the difference between healthy cells and abnormal cells, such as cancer cells, based on the way the cells look and move.
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Other SciencesTue, 25 Jan 2011 14:41:24 EDTnews215188845Quantum or not? Mathematical equations resolve nanostructures behaviorUnderstanding the transport of electrons in nanostructures and biological molecules is crucial to understanding properties such as electrical conductivity or the biochemical behavior of molecules. However, determining whether the electrons are behaving according to the classical laws of motion or the quantum mechanical regime at the nanoscale is challenging because many nanostructures fall in a grey area between both regimes. Japanese researchers from the RIKEN Advanced Science Institute in Wako, with colleagues from Germany and Taiwan, have now devised a set of mathematical equations that can distinguish classical from quantum mechanical behavior of electrons in nanostructures.
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PhysicsFri, 17 Dec 2010 11:33:09 EDTnews211807964Unraveling the MatrixA new way of analyzing grids of numbers known as matrices could improve signal-processing applications and data-compression schemes.
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Other SciencesThu, 29 Jul 2010 14:40:01 EDTnews199631037The mathematics behind a good night's sleepWhy can't I fall asleep? Will this new medication keep me up all night? Can I sleep off this cold? Despite decades of research, answers to these basic questions about one of our most essential bodily functions remain exceptionally difficult to answer. In fact, researchers still don't fully understand why we even sleep at all. In an effort to better understand the sleep-wake cycle and how it can go awry, researchers at Rensselaer Polytechnic Institute are taking a different approach than the traditional brain scans and sleep studies. They are using mathematics.
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Other SciencesThu, 25 Feb 2010 13:34:30 EDTnews186327256Scientists hope to unlock mysteries of proteinsProteins, the work-horse molecules necessary for virtually every human action from breathing to thinking, have proved an almost ghostly presence, daring scientists to fully grasp their structure and behavior. Now, physicists at the University of Wisconsin-Milwaukee have developed powerful imaging techniques that promise to tell us much more about what proteins are and what they do, how they change shapes and how they work together in a cell.
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PhysicsTue, 14 Apr 2009 15:20:32 EDTnews158941208'Fuzzy logic' reveals cells' inner workings(PhysOrg.com) -- Living cells are bombarded with messages from the outside world -- hormones and other chemicals tell them to grow, migrate, die or do nothing. Inside the cell, complex signaling networks interpret these cues and make life-and-death decisions.
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BiologyFri, 03 Apr 2009 13:05:46 EDTnews157982577