Δευτέρα 22 Αυγούστου 2016
Κυριακή 21 Αυγούστου 2016
Shocking Video: The moment of explosion in Turkey
Βίντεο ντοκουμέντο έρχεται στο φως της δημοσιότητας το οποίο αποκαλύπτει στιγμή του αιματοκυλίσματος σε γάμο στο Γκαζιάντεπ της Τουρκίας.
Στο βίντεο φαίνεται ο κόσμος να διασκεδάζει και να χορεύει μαζί με το νεόνυμφο ζευγάρι και την στιγμή εκείνη μια ισχυρή έκρηξη τρομάζει τους πάντες!, Τζάμια σπάνε, παντού φαίνονται φλόγες και μαύροι καπνοί και όλος ο κόσμος αρχίζει να τρέχει πανικόβλητος.
Ανάμεσά τους και μικρά παιδιά που ουρλιάζουν και προσπαθούν απεγνωσμένα να βρουν τους γονείς τους.
Δείτε το συγκλονιστικό βίντεο:
£2 Million Lamborghini Centenario Roadster debuts at Pebble Beach – & it’s all SOLD out Read more: http://www.carsuk.net/lamborghini-centenario-roadster-debuts-pebble-beach-sold/#ixzz4Hzfcjn00
£2 Million Lamborghini Centenario Roadster debust at Pebble
The Lamborghini Centenario Roadster has debuted at Pebble Beach as a convertible version of the Centenario revealed at the Geneva Motor Show. Costs £2 million.
Essentially a convertible take on the Centenario we saw at Geneva in the spring, built to celebrate the centenary of Ferruccio Lamborghini, there will be just 20 built – that’s half the run of the Centanario Coupe – and each will cost – as near as makes no difference – £2 million in the UK.
Just like the Coupe, the Roadster gets Lamborghini’s naturally aspirated V12 delivering 760bhp through all four wheels – which all steer too – with loads of carbon fibre and some clever aerodynamics to keep it all together.
But you can’t buy one.
Lamborhghini has, once again, managed to churn out a titivated Aventador at getting on for ten times the price and sold them all in quick sticks. Which is very good business if you can do it, but we’re not entirely sure it adds to Lamborghini’s credibility.
Still, with its OTT looks Lamborghini should mop up credibility in the supercar poster market. Assuming it still exists.
HELLISH ‘FIRENADOES’ ARE STRIKING EAST OF LOS ANGELES
Ashkey May for USA Today reports Fire tornadoes, also known as firenadoes or fire whirls, are spiraling out of wildfires east of Los Angeles this week. Wildfires have scorched more than 25,000 acres of mountain and desert near San Bernardino, Calif., where at least 82,000 people have been told to evacuate.
Σάββατο 20 Αυγούστου 2016
Scientists are closing in on turning hydrogen into a metal in liquid or solid form
The pressure is on to make metallic hydrogen
Scientists are closing in on turning hydrogen into a metal in liquid or solid form
UNDER PRESSURE Physicists use powerful electrical pulses in the Z machine at Sandia National Laboratories to create liquid metallic hydrogen for fleeting moments.
RANDY MONTOYA/SANDIA LABS
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In a few highly specialized laboratories, scientists bombard matter with the world’s most powerful electrical pulses or zap it with sophisticated lasers. Other labs squeeze heavy-duty diamonds together hard enough to crack them.
All this is in pursuit of a priceless metal. It’s not gold, silver or platinum. The scientists’ quarry is hydrogen in its most elusive of forms.
Several rival teams are striving to transform hydrogen, ordinarily a gas, into a metal. It’s a high-stakes, high-passion pursuit that sparks dreams of a coveted new material that could unlock enormous technological advances in electronics.
“Everybody knows very well about the rewards you could get by doing this, so jealousy and envy [are] kind of high,” says Eugene Gregoryanz, a physicist at the University of Edinburgh who’s been hunting metallic hydrogen for more than a decade.
Metallic hydrogen in its solid form, scientists propose, could be a superconductor: a material that allows electrons to flow through it effortlessly, with no loss of energy. All known superconductors function only at extremely low temperatures, a major drawback. Theorists suspect that superconducting metallic hydrogen might work at room temperature. A room-temperature superconductor is one of the most eagerly sought goals in physics; it would offer enormous energy savings and vast improvements in the transmission and storage of energy.
Metallic hydrogen’s significance extends beyond earthly pursuits. The material could also help scientists understand our own solar system. At high temperatures, compressed hydrogen becomes a metallic liquid — a form that is thought to lurk beneath the clouds of monstrous gas planets, like Jupiter and Saturn. Sorting out the properties of hydrogen at extreme heat and high pressure could resolve certain persistent puzzles about the gas giants. Researchers have reported brief glimpses of the liquid metal form of hydrogen in the lab — although questions linger about the true nature of the material.
While no lab has yet produced solid metallic hydrogen, the combined efforts of many scientists are rapidly closing in on a more complete understanding of the element itself — as well as better insight into the complex inner workings of solids.
At room temperature and atmospheric pressure, hydrogen is a gas. But like other materials, altered conditions can transform hydrogen into a solid or a liquid. With low enough temperatures or a sufficiently forceful squeeze, hydrogen shape-shifts into a solid. Add heat while squeezing, and it becomes a liquid.
If subjected to still more extreme conditions, hydrogen can — at least theoretically — undergo another transformation, into a metal. All metals have one thing in common: They conduct electricity, due to free-flowing electrons that can go where they please within the material.
Squeeze anything hard enough and it will become a metal. “Pressure does a great job of dislodging the outer electrons,” Ashcroft says. This is what scientists are aiming to do with hydrogen: create a sloshing soup of roving electrons in either a liquid or a solid.
When hydrogen is compressed, many atoms begin to interact with one another, while paired in molecules of two hydrogen atoms each. The underlying physics becomes a thorny jumble. “It is amazing; the stuff takes up incredibly complex arrangements in the solid state,” says Ashcroft, the first scientist to propose, in 1968, that metallic hydrogen could be a high-temperature superconductor.
Hydrogen’s complexity fascinates scientists. “It’s not just the metallization question that’s of interest to me,” says Russell Hemley, a chemist at the Carnegie Institution for Science in Washington, D.C., and Lawrence Livermore National Laboratory in California. Studying the intricacies of hydrogen’s behavior can help scientists refine their understanding of the physics of materials.
In 1935, when physicists Eugene Wigner and Hillard Bell Huntington of Princeton University first predicted that compressed solid hydrogen would be metallic, they thought the transition to a metal might occur at a pressure 250,000 times that of Earth’s atmosphere. That may sound like a lot, but scientists have since squeezed hydrogen to pressures more than 10 times as high — and still no solid metal.
Scientists originally expected that the transition would be a simple flip to metallic behavior. Not so, says theoretical physicist David Ceperley of the University of Illinois at Urbana-Champaign. “Nature has a lot more possibilities.” Solid hydrogen exists in multiple forms, each with a different crystal structure. As the pressure climbs, the wily hydrogen molecules shift into ever-more-complex arrangements, or phases. (For physicists, the “phase” of matter goes deeper than the simple states of solid, liquid or gas.) The number of known solid phases of hydrogen has grown steadily as higher pressures are reached, with four phases now well established. The next phase scientists find could be a metal — they hope.
All this is in pursuit of a priceless metal. It’s not gold, silver or platinum. The scientists’ quarry is hydrogen in its most elusive of forms.
Several rival teams are striving to transform hydrogen, ordinarily a gas, into a metal. It’s a high-stakes, high-passion pursuit that sparks dreams of a coveted new material that could unlock enormous technological advances in electronics.
“Everybody knows very well about the rewards you could get by doing this, so jealousy and envy [are] kind of high,” says Eugene Gregoryanz, a physicist at the University of Edinburgh who’s been hunting metallic hydrogen for more than a decade.
Metallic hydrogen in its solid form, scientists propose, could be a superconductor: a material that allows electrons to flow through it effortlessly, with no loss of energy. All known superconductors function only at extremely low temperatures, a major drawback. Theorists suspect that superconducting metallic hydrogen might work at room temperature. A room-temperature superconductor is one of the most eagerly sought goals in physics; it would offer enormous energy savings and vast improvements in the transmission and storage of energy.
Metallic hydrogen’s significance extends beyond earthly pursuits. The material could also help scientists understand our own solar system. At high temperatures, compressed hydrogen becomes a metallic liquid — a form that is thought to lurk beneath the clouds of monstrous gas planets, like Jupiter and Saturn. Sorting out the properties of hydrogen at extreme heat and high pressure could resolve certain persistent puzzles about the gas giants. Researchers have reported brief glimpses of the liquid metal form of hydrogen in the lab — although questions linger about the true nature of the material.
While no lab has yet produced solid metallic hydrogen, the combined efforts of many scientists are rapidly closing in on a more complete understanding of the element itself — as well as better insight into the complex inner workings of solids.
Not so simple
Hydrogen, the first element in the periodic table and the most common element in the universe, ought to be easy to understand: a single proton paired with a single electron. “What could be more simple than an assembly of electrons and protons?” asks theoretical physicist Neil Ashcroft of Cornell University. But at high pressures, the physics of hydrogen rapidly becomes complex.At room temperature and atmospheric pressure, hydrogen is a gas. But like other materials, altered conditions can transform hydrogen into a solid or a liquid. With low enough temperatures or a sufficiently forceful squeeze, hydrogen shape-shifts into a solid. Add heat while squeezing, and it becomes a liquid.
If subjected to still more extreme conditions, hydrogen can — at least theoretically — undergo another transformation, into a metal. All metals have one thing in common: They conduct electricity, due to free-flowing electrons that can go where they please within the material.
Exotic forms of hydrogen
Under ordinary conditions, in a region too small to be seen on this chart, hydrogen is a gas. At very high temperatures, it becomes liquid. At high pressures, it’s a solid in one of several phases. Scientists expect that it will become a solid metal at pressures not yet reached.
Source: I.F. Silvera/Harvard Univ.
ADAPTED BY E. CONOVER AND J. HIRSHFELD
Source: I.F. Silvera/Harvard Univ.
When hydrogen is compressed, many atoms begin to interact with one another, while paired in molecules of two hydrogen atoms each. The underlying physics becomes a thorny jumble. “It is amazing; the stuff takes up incredibly complex arrangements in the solid state,” says Ashcroft, the first scientist to propose, in 1968, that metallic hydrogen could be a high-temperature superconductor.
Hydrogen’s complexity fascinates scientists. “It’s not just the metallization question that’s of interest to me,” says Russell Hemley, a chemist at the Carnegie Institution for Science in Washington, D.C., and Lawrence Livermore National Laboratory in California. Studying the intricacies of hydrogen’s behavior can help scientists refine their understanding of the physics of materials.
In 1935, when physicists Eugene Wigner and Hillard Bell Huntington of Princeton University first predicted that compressed solid hydrogen would be metallic, they thought the transition to a metal might occur at a pressure 250,000 times that of Earth’s atmosphere. That may sound like a lot, but scientists have since squeezed hydrogen to pressures more than 10 times as high — and still no solid metal.
Scientists originally expected that the transition would be a simple flip to metallic behavior. Not so, says theoretical physicist David Ceperley of the University of Illinois at Urbana-Champaign. “Nature has a lot more possibilities.” Solid hydrogen exists in multiple forms, each with a different crystal structure. As the pressure climbs, the wily hydrogen molecules shift into ever-more-complex arrangements, or phases. (For physicists, the “phase” of matter goes deeper than the simple states of solid, liquid or gas.) The number of known solid phases of hydrogen has grown steadily as higher pressures are reached, with four phases now well established. The next phase scientists find could be a metal — they hope.
Πέμπτη 18 Αυγούστου 2016
Syria: Orthodox church opens doors for Muslim and Christian refugees in Aleppo
Δημοσιεύτηκε στις 18 Αυγ 2016
An emergency relief centre was opened by the Saint Elias Orthodox Cathedral in Aleppo, Thursday, with the aim of providing shelter and humanitarian aid to Christian and Muslim refugees from the surroundings of war-torn Aleppo, in the face of the intensifying battles.
An estimated 4,000 families are currently being taken care of by the Aleppo Orthodox Church, with half of them reportedly being Muslim.
An estimated 4,000 families are currently being taken care of by the Aleppo Orthodox Church, with half of them reportedly being Muslim.
World's 'largest aircraft' gets off ground
London (AFP) - The world's "largest aircraft" embarked on its maiden flight on Wednesday, four days after a previous attempt was abandoned due to technical issues.
The Airlander 10 -- part plane, part airship -- took to the skies amid cheers and applause from crowds gathered at an airfield in Cardington, central England.
The successful flight comes 85 years after another airship -- the ill-fated R101 -- took off from the same airfield in October 1930 before crashing in France, killing 48 people and effectively ending the development of airships in Britain.
Originally developed for the US army as a surveillance aircraft, the 92-metre- (302 feet-) long Airlander 10, also has potential uses in the commercial sector, such as carrying cargo, according to makers Hybrid Air Vehicles (HAV).
The firm, which describes the Airlander as the "largest aircraft currently flying", received a British government grant of 2.5 million pounds ($3.7 million, 2.9 million euros to develop the project.
The Airlander can fly at up to 4,880 metres (6,000 feet) and reach speeds of 148 kilometres per hour (92 miles per hour), according to HAV.
Filled with helium, it can stay airborne for more than two weeks unmanned and up to five days if manned.
Its first flight was delayed on Sunday due to a technical fault, which was resolved in time for the aircraft to take off in clear weather conditions for Wednesday's 30-minute flight.
HAV CEO Stephen McGlennan said the aircraft was cheaper and greener than helicopter technology.
"It's a great British innovation. It's a combination of an aircraft that has parts of normal fixed wing aircraft, it's got helicopter, it's got airship," he said.
A project to develop the aircraft for surveillance use by the US military was shelved due to budget cuts.
Τετάρτη 17 Αυγούστου 2016
A geologist has found part of a lost ocean that existed long before the Atlantic
The suspected location of a slab of ancient buried seafloor. NASA/Goddard Space Flight Center
Earth isn't the steadfast planet we assume it to be. Its continent-size slabs constantly move, buckle, and vanish beneath each other over the millennia, all while hardly leaving a trace.
But geologist Roi Granot, a senior lecturer at Ben Gurion University in Israel, says he's discovered the most ancient slab of seafloor on Earth to date.
The supercontinent Pangea, shown with the borders of modern nations. The Tethys Sea is at center.Massimo Pietrobon/Wikimedia Commons (CC BY 3.0)
The roughly 60,000-square-mile piece of crust has been hiding below the eastern Mediterranean Sea for about 340 million years (give or take 30 million years).
That means it's from right around when Earth's landmasses came together to form the supercontinent Pangea, which later separated into the continents we recognize today.
It's also about 70% older than any other seafloors researchers know of, including those of the Atlantic and Indian oceans.
What's more, Granot thinks the ancient slab might be a remnant of Earth's long-lost Tethys Sea (or Ocean).
"[W]e don't have intact oceanic crust that old … It would mean that this ocean was formed while Pangea, the last supercontinent, was still in the making," Granot wrote in an email to Business Insider.
No one had spotted the slab before because it's buried under more than 8 miles of sediment, according to Granot's new study, published Monday in the journal Nature Geoscience.
To test his hunch that the Mediterranean Sea was hiding something big, Granot conducted four research cruises from October 2012 through October 2014.
A crew towed three large sensors behind a boat, zigzagging across the sea during each trip to hunt for magnetic anomalies — the signatures of magnetic rocks locked in crust that was made by undersea volcanic ridges — buried deep beneath miles of ocean sediment.
The 310- to 370-million-year-old slab of seafloor is shaded in dark blue. Roi Granot/Nature Geoscience
A pattern of magnetic anomalies, Granot reasoned, might reveal the existence of an ancient block of seafloor crust.
And after 2 years of gathering data, his results revealed just that.
"I was shocked," said Granot, who was stuck on a 16-hour flight when he finished processing the data. "The picture was quite clear — I see oceanic crust! Since I had no one to share my new understanding, I had to walk back and forth in the airplane until [we] landed."
The findings could mean the Tethys Ocean formed about 50 million years before scientists thought.
"But we are not sure that it is really part of the Tethys Ocean. It could be that this oceanic crust is not related at all," Granot said, noting that it instead may be part of some other, unknown ocean bottom.
And aside from rewriting textbooks on plate tectonics, Granot says the discovery "could also help to understand heat flow in the eastern Mediterranean, which in turn will help to assess the potential of hydrocarbon [oil and gas reserves] in that region."
Other geologists will likely be working to confirm this finding, and Granot noted in the paper that the different tectonic possibilities that may have generated this discovery should all be tested in future studies.
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