Physicists unveil a theory for a new kind of superconductivity. (PhysOrg.com) -- In this 100th anniversary year of the discovery of superconductivity, physicists at the University of Massachusetts Amherst and Sweden’s Royal Institute of Technology have published a fully self-consistent theory of the new kind of superconducting behavior, Type 1.5, this month in the journal Physical Review B.
In three recent papers, the authors report on their detailed investigations to show that a Type 1.5 superconducting state is indeed possible in a class of materials called multiband superconductors. For years, most physicists believed that superconductors must be either Type I or Type II. Historical Collections. 400 Free Online Courses from Top Universities. Advertisement Get 1150 free online courses from the world’s leading universities — Stanford, Yale, MIT, Harvard, Berkeley, Oxford and more.
You can download these audio & video courses (often from iTunes, YouTube, or university web sites) straight to your computer or mp3 player. Over 30,000 hours of free audio & video lectures, await you now. Humanities & Social Sciences Art & Art History Courses. A voice for the Electric Universe. Solar System Scope. Holographic dark information energy. Holographic Dark Information Energy gets my vote for the best mix of arcane theoretical concepts expressed in the shortest number of words – and just to keep it interesting, it’s mostly about entropy.
The second law of thermodynamics requires that the entropy of a closed system cannot decrease. So drop a chunk of ice in a hot bath and the second law requires that the ice melts and the bath water cools – moving the system from a state of thermal disequilibrium (low entropy) towards a state of thermal equilibrium (high entropy). In an isolated system (or an isolated bath) this process can only move in one direction and is irreversible. A similar idea exists within information theory. Landauer’s principle has it that any logically irreversible manipulation of information, such as erasing one bit of information, equates to an increase in entropy. Cruz deWilde: Career Portfolio. Human Physiology - Neurons & the Nervous System. The human nervous system consists of billions of nerve cells (or neurons)plus supporting (neuroglial) cells.
Neurons are able to respond to stimuli (such as touch, sound, light, and so on), conduct impulses, and communicate with each other (and with other types of cells like muscle cells). Nervous system The nucleus of a neuron is located in the cell body. Extending out from the cell body are processes called dendrites and axons. These processes vary in number & relative length but always serve to conduct impulses (with dendrites conducting impulses toward the cell body and axons conducting impulses away from the cell body). Neurons can respond to stimuli and conduct impulses because a membrane potential is established across the cell membrane. Air on the Dirac Strings. Hail the first sound ‘lasers’ Life's asymmetry may come from space. Processes taking place in outer space, and not on Earth, are likely to have led to the biological molecules found exclusively in either a left-handed or right-handed form.
That is the conclusion drawn from recent experiments carried out at the SOLEIL synchrotron facility near Paris in which a number of simple molecules found in star-forming regions exposed to polarized radiation created amino acids with an imbalance of left- and right-handed molecules. Physicists craft Luneburg lens from silicon. Physicists in the UK have created a Luneburg lens – a lens able to focus light from all directions equally well – on a silicon chip.
The device could one day find applications in on-chip Fourier optics, which are used by the telecoms industry to perform tasks from noise reduction to data compression. Most practical lenses have aberrations, which means that their ability to focus light deteriorates when the incident light is off-axis. But in the Luneburg lens, proposed over 60 years ago, focusing is equally good wherever the light comes from. Brightest bubble bursting yet. Physicists in the US claim to have broken the record for the brightness of light generated by “sonoluminescence”, the imploding of a bubble when it is blasted with sound waves.
With a peak power of 100 W, the light is 100 times as bright as seen in previous sonoluminescence experiments, and may help scientists understand how the strange phenomenon works. Sonoluminesence was discovered in the first half of the 20th century but it was only in the 1990s that physicists began to investigate the phenomenon seriously.
Although no-one is sure how it works, the basic idea is that sound waves are fed into a vessel containing one or more bubbles inside a liquid. Wave Structure of Matter (WSM) - Articles - The Wave Structure of Matter (WSM) and the Origin of the Natural Laws. Milo Wolff, M.I.T (retired) 1125 Third Street, Manhattan Beach, CA 90266 Milo.Wolff@QuantumMatter.com I.
Introduction II. The New York Times > Magazine > Thermoacoustic Freezer, The. Published: December 12, 2004 his April, a fire-hydrant-size apparatus called a thermoacoustic freezer made its debut at a Ben & Jerry's in Manhattan.
The event was a relatively quiet affair, which was no small achievement: inside the core of the steel cooling unit, which was attached to a standard ice-cream cabinet, a loudspeaker emitted a 195-decibel screech to keep quarts of ice cream cold. From the outside, you could hear only a soft hum. How did it work? Fusion Reactors. As of 2008, the United States Department of Energy (DOE) and other U.S. federal agencies have spent approximately 18 billion dollars on energy devices using the fusion reaction between deuterium and tritium (D-T Fusion, below left).
In this reaction the hydrogen isotope, deuterium (with one “extra” neutron) collides with the hydrogen isotope, tritium (with two “extra” neutrons), to form an alpha particle (a helium nucleus) and a neutron. This is a nuclear reaction: between them, the new alpha and the neutron possess 17.6 MeV (million electron volts) of energy. "crazy engine" stirling Low Temperature Difference Engine. Burning Salt Water on YouTube, Inventor Waits for Prime Time. Just over a year agoseveral media outlets reported that John Kanzius, an amateur inventor from Erie, Pa., had discovered a seemingly impossible phenomenon: a way to burn salt water by exposing it to radio waves. Videos of the experiment became YouTube sensations, though they garnered as many critical comments as favorable ones. Now that the initial fervor has waned, we checked in with Kanzius, a collaborator and some critics to see how the technique has progressed, or if it's just another example of Web-propelled junk science.
Kanzius' concept is simple: expose salt water to 13.56 MHz radio waves and light a match. Ultrasonic Cavitation (hielscher.com) Laser + Balloon + Fire Inside It = Awesome! * webcam video * *, 2011 * IMG * Janna Levin: Il suono dell'universo. Planets Take Shape In Embryonic Gas Clouds. Gravity satellite yields 'Potato Earth' view.
31 March 2011Last updated at 11:27 ET By Jonathan Amos Science correspondent, BBC News, Munich It looks like a giant potato in space, and yet the information in this model is the sharpest view we have of how gravity varies across the Earth. Quantum explanation for how we smell gets new support. (PhysOrg.com) -- Since 1996, when biophysicist Luca Turin first suggested that quantum mechanics may help explain how we smell various odors, the idea has met with controversy. In the past 15 years, some studies have found evidence supporting the theory, while other studies have found problems with it. Now Turin - who is currently at MIT and the Fleming Biomedical Sciences Research Centre in Vari, Greece - along with his colleagues, has published a study that provides further evidence for the vibration theory of smell, and may make the theory a bit less controversial.
In the traditional “lock and key” model of smell, odorant molecules of different shapes and sizes fit into different receptors, similar to the current understanding of how drugs affect the body. When a molecule enters a receptor, the receptor sends a signal to the brain, and we smell that molecule. Turning Mediocre Products into Awesome Products. Corinna Cortes. Københavnske dataloger kaprer dansk Google-es. Én af topmedarbejderne hos søgemaskinegiganten Google, Corinna Cortes, tiltræder i dag som adjungeret professor på Datalogisk Institut ved Københavns Universitet.
Plantevenlig LED testet i Danmark og klar til verdensmarkedet. Cruz deWilde: Career Portfolio. Musical Tesla Coils Play Intro, 2001: A Space Odyssey, et al @ Penguicon 2008 (8a1) Tesla Coils - Arc Attack - Doctor Who Theme Song - Makers Faire 2010 - San Mateo - No. 1. Massive black hole challenges conventional theories. Astronomers have been astonished to find a supermassive black hole in the center of a tiny low-mass galaxy, suggesting that such black holes can form before their host galaxies.
Turning Gravity Inside Out. Goethe, Faust - Part I Prologue - A new English translation. » Can you make electricity by squeezing water through holes in the breeze? Peter Donnelly: How juries are fooled by statistics Sphere Sculptures Across the Globe. Cosmogenesis. Spark in spiral magnetic field