Elusive Dark Matter May Have Already Been Found. The mysterious dark matter that makes up most of the matter in the universe may already have been detected with superconducting circuits, researchers say.
Dark matter is currently one of the greatest mysteries in the cosmos — an invisible substance thought to make up five-sixths of all matter in the universe. The scientific consensus right now is that dark matter is composed of a new type of particle, one that interacts very weakly at best with all the known forces of the universe, except gravity. As such, dark matter is invisible and nearly completely intangible, mostly only detectable via the gravitational pull it exerts. A number of ongoing experiments based on massive sensor arrays buried underground are attempting to identify the weak signals dark matter is expected to give off when it experiences a rare collision with other particles.
So far, none of these studies have detected any dark matter fingerprints. "Contain Atomic Matter Emitting at 66% the Speed of Light" The Visible-light Hubble image above shows the jet emitted by the 3-billion-solar-mass black hole at the heart of galaxy M87.
An international team of astronomers has just answered a long standing question about these enigmatic jets. The team studied the radio waves and X-rays emitted by a small black hole a few times the mass of the Sun. New Wave Energy wants to put power plants in the sky. Harvesting power from the wind and the sun is nothing new.
We've seen flying wind turbines and solar power plants that aim to provide clean renewable energy. UK-based New Wave Energy has a bolder idea in the works. The company plans to build the first high altitude aerial power plant, using networks of unmanned drones that can harvest energy from multiple sources and transmit it wirelessly to receiving stations on the ground. Untitled. References[edit] Jump up ^ "TUMannouncement".
Technical University of Munich. Jump up ^ "FRIB SAC". Superconductivity switched on by magnetic field. Superconductivity and magnetic fields are normally seen as rivals -- very strong magnetic fields normally destroy the superconducting state.
Physicists at the Paul Scherrer Institute have now demonstrated that a novel superconducting state is only created in the material CeCoIn5 when there are strong external magnetic fields. This state can then be manipulated by modifying the field direction. The material is already superconducting in weaker fields, too. "Entire Solar Systems are Needed to Kick-Start Life" (A 2013 Most Popular) There is evidence that life on Earth could not have started without the other planets.
The conditions on the prehistoric Earth would only have served to inhibit the formation of RNA. Mars, on the other hand, would have been just right. While there was some water on ancient Mars, there wouldn't have been enough to hamper the formation of RNA. Also, while the early Earth was starved of oxygen, Mars would have had enough to create oxidized molybdenum and boron, which are pivotal in the construction of RNA. The Idea Factory. New salt compounds challenge the foundation of chemistry. All good research breaks new ground, but rarely does the research unearth truths that challenge the foundation of a science.
That's what Artem R. Oganov has done, and the professor of theoretical crystallography in the Department of Geosciences will have his work published in the Dec. 20, 2013 issue of the journal Science. The paper, titled "Unexpected stable stoichiometries of sodium chlorides," documents his predictions about, and experiments in, compressing sodium chloride -- rock salt -- to form new compounds. Halley's Comet May Be Linked to Famine 1,500 Years Ago. SAN FRANCISCO — The ancients had ample reason to view comets as harbingers of doom, it would appear.
A piece of the famous Halley's comet likely slammed into Earth in A.D. 536, blasting so much dust into the atmosphere that the planet cooled considerably, a new study suggests. This dramatic climate shift is linked to drought and famine around the world, which may have made humanity more susceptible to "Justinian's plague" in A.D. 541-542 — the first recorded emergence of the Black Death in Europe.
The new results come from an analysis of Greenland ice that was laid down between A.D. 533 and 540. The ice cores record large amounts of atmospheric dust during this seven-year period, not all of it originating on Earth. Small size enhances charge transfer in quantum dots. Quantum dots -- tiny semiconductor crystals with diameters measured in billionths of a meter -- have enormous potential for applications that make use of their ability to absorb or emit light and/or electric charges.
Examples include more vividly colored light-emitting diodes (LEDs), photovoltaic solar cells, nanoscale transistors, and biosensors. But because these applications have differing -- sometimes opposite -- requirements, finding ways to control the dots' optical and electronic properties is crucial to their success. In a study just published in the journal Chemical Communications, scientists at the U.S. Loudspeaker is first-ever 3-D-printed consumer electronic. Cornell University researchers have 3D printed a working loudspeaker, seamlessly integrating the plastic, conductive and magnetic parts, and ready for use almost as soon as it comes out of the printer.
It's an achievement that 3D printing evangelists feel will soon be the norm; rather than assembling consumer products from parts and components, complete functioning products could be fabricated at once, on demand. The loudspeaker is a project led by Apoorva Kiran and Robert MacCurdy, graduate students in mechanical engineering, who work with Hod Lipson, associate professor of mechanical and aerospace engineering, and a leading 3D printing innovator. Cosmic Flows of the Local Universe (VIDEO) Nanoscale friction: High energy losses in the vicinity of charge density waves. In collaboration with the University of Basel, an international team of researchers has observed a strong energy loss caused by frictional effects in the vicinity of charge density waves. This may have practical significance in the control of nanoscale friction. The results have been published in the scientific journal Nature Materials. Friction is often seen as an adverse phenomenon that leads to wear and causes energy loss.
Conversely, however, too little friction can be a disadvantage as well -- for example, running on an icy surface or driving on a wet road. Dailygalaxy.com/ Elusive Dark Matter May Have Already Been Found. Higgs field. The Higgs Field is an invisible energy field that exists everywhere in the universe. The field is accompanied by what may be a fundamental particle called the Higgs Boson, which it uses to continuously interact with other particles.
As particles pass through the field they are endowed with the property of mass, much as an object passing through treacle (or molasses) will become slower. Although apparent, mass is not generated by the Higgs field, as creation of matter or energy would conflict with the laws of conservation; mass is, however, transferred to particles from the field, which contains the relative mass in the form of energy. Once the field has endowed a formerly massless particle the particle slows down because it has become heavier. If the Higgs field did not exist, particles would not have the mass required to attract one another, and would simply float around freely at light-speed. Is The Universe A Hologram? Physicists Say It's Possible. Intriguing New Equations Show a "Phased" Creation. Everybody knows of the transitions between liquid, solid and gaseous phases.
But also time and space can undergo a phase transition, as the physicists Steven Hawking and Don Page pointed out in 1983. They calculated that empty space can turn into a black hole at a specific temperature. Can a similar process create a whole expanding universe such as ours? Daniel Grumiller from the Vienna University of Technology looked into this, together with colleagues from the USA and Great Britain. Their calculations show that there is indeed a critical temperature at which an empty, flat spacetime turns into an expanding universe with mass. Powerful tool for genetic engineering. Viruses cannot only cause illnesses in humans, they also infect bacteria. Radio - Listen to Free Internet Radio, Find New Music.
Higgs field. Intriguing New Equations Show a "Phased" Creation. Loudspeaker is first-ever 3-D-printed consumer electronic. Cosmic ray. Cosmic ray flux versus particle energy The term ray is a historical accident, as cosmic rays were at first, and wrongly, thought to be mostly electromagnetic radiation. In common scientific usage[4] high-energy particles with intrinsic mass are known as "cosmic" rays, and photons, which are quanta of electromagnetic radiation (and so have no intrinsic mass) are known by their common names, such as "gamma rays" or "X-rays", depending on their frequencies. Of primary cosmic rays, which originate outside of Earth's atmosphere, about 99% are the nuclei (stripped of their electron shells) of well-known atoms, and about 1% are solitary electrons (similar to beta particles). Of the nuclei, about 90% are simple protons, i. e. hydrogen nuclei; 9% are alpha particles, and 1% are the nuclei of heavier elements, called HZE ions.[10] A very small fraction are stable particles of antimatter, such as positrons or antiprotons.
6a00d8341bf7f753ef019b03d18845970d-pi (JPEG Image, 571 × 411 pixels) Cosmic Flows of the Local Universe (VIDEO) Higgs field. Possibility of cloning quantum information from the past. Elusive Dark Matter May Have Already Been Found. Is The Universe A Hologram? Physicists Say It's Possible. Spectacular Water Plumes Taller than Mount Everest Discovered on Europa.
Huge active plumes containing water vapour being released from the surface of Jupiter’s moon Europa have been discovered. This sensational find was made using the NASA/ESA Hubble Space Telescope. Europa has been a focus of extraterrestrial research for some time now as there were clear indications that it harbours a liquid ocean beneath its icy crust. Nanoscale friction: High energy losses in the vicinity of charge density waves. Electrical control of single atom magnets. Laser light at useful wavelengths from semiconductor nanowires. Thread-like semiconductor structures called nanowires, so thin that they are effectively one-dimensional, show potential as lasers for applications in computing, communications, and sensing. Scientists at the Technische Universität München (TUM) have demonstrated laser action in semiconductor nanowires that emit light at technologically useful wavelengths and operate at room temperature.
They now have documented this breakthrough in the journal Nature Communications and, in Nano Letters, have disclosed further results showing enhanced optical and electronic performance. New salt compounds challenge the foundation of chemistry.