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 :: Vaulted Treasures
Get free online courses from the world’s leading universities.
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).
Air on the Dirac Strings
Two independent groups of physicists have unveiled the first phonon "lasers" – devices that emit coherent sound waves in much the same ways as lasers emit coherent light waves. Sometimes called "sasers", one of the devices emits sound at about 400 GHz while the other operates in the megahertz range. Such very high frequency sound could be used to probe the interiors of tiny objects – and the ability to create laser-like beams of sound could lead to new imaging applications. Indeed, the differences between the two devices suggest that sasers could be made to operate over a wide range of frequencies. At the heart of any optical laser is a medium with an electronic transition that involves the emission of a photon. 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. So-called chiral molecules can exist in two forms, with one being the non-superimposable mirror-image of the other, even though both have the same chemical make-up. Although laboratory experiments will tend to produce equal quantities of the left- and right-handed versions of a given chiral molecule, many of the chiral molecules found in living organisms come in only one variety. For example, the amino acids that make up proteins only exist in the left-handed form, while the sugars found in DNA are exclusively right-handed.
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.
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. Brightest bubble bursting yet
Milo Wolff, M.I.T (retired) 1125 Third Street, Manhattan Beach, CA 90266 Milo.Wolff@QuantumMatter.com Wave Structure of Matter (WSM) - Articles - The Wave Structure of Matter (WSM) and the Origin of the Natural Laws
Published: December 12, 2004 The New York Times > Magazine > Thermoacoustic Freezer, The
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). Fusion Reactors
"crazy engine" stirling Low Temperature Difference Engine
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. Burning Salt Water on YouTube, Inventor Waits for Prime Time
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. The globe has been released by the team working on Europe's Goce satellite.
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.
Turning Mediocre Products into Awesome Products
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. Danske Corinna Cortes er til daglig leder af Google Research i New York, USA, men skal fremover også stå til rådighed for universitetet med sin viden om 'machine learning', eller maskinlæring. Et forskningsområde, som i praksis benyttes til at optimere søgeresultaterne i søgemaskiner som Google og Yahoo.
Plantevenlig LED testet i Danmark og klar til verdensmarkedet | elektronikbranchen.dk
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
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? :: Granite Geek :: NashuaTelegraph.com
Peter Donnelly: How juries are fooled by statistics
Sphere Sculptures Across the Globe
Spark in spiral magnetic field