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Quantum bounce could make black holes explode
Black holes might end their lives by transforming into their exact opposite — 'white holes' that explosively pour all the material they ever swallowed into space, say two physicists. The suggestion, based on a speculative quantum theory of gravity, could solve a long-standing conundrum about whether black holes destroy information.
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'Quantum Cheshire Cat' observed
Scientists have for the first time separated a particle from one of its physical properties - creating a "quantum Cheshire Cat" The phenomenon is named after the curious feline in Alice in Wonderland, who vanishes leaving only its grin.
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Revealing the physics behind 'hole-punch' clouds
Hole-punch clouds were first reported in the 1940s. Laypeople had been trying to find an explanation for ages, and some even claimed that the holes could have been formed due to supernatural causes. But a few scientists started to track the rare occurrence and suggested that they were probably linked to rocket launches - and their guess was pretty close to the actual cause.
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The never-ending conundrums of classical physics
During its teenage and young adult years—what is now referred to as its “classical” period—physics made a lot of mistakes. In the old physics, mass and energy were separately conserved; particles’ positions and momenta could be arbitrarily specified; gravity acted instantaneously at a distance; the equality of gravitational and inertial mass was just a coincidence; and there was no speed limit. All these ideas and assumptions are now known to be in some way untenable. They're either inaccurate..
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5 Fun Physics Phenomena
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What If The Big Bang Was A 4D Black Hole Instead?
The Big Bang has a lot of problems. For one, the usual laws of physics break down in a singularity. It’s bizarre and chaotic; anything could happen. Which makes cosmologists wonder why it would evolve into something as well-ordered as the universe we see around us. As Niayesh Afshordi put it in Nature last year: “For all physicists know, dragons could have come flying out of the singularity.”
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The Physics of the Railgun
A conventional cannon has some type of shell in a tube. The shell is then launched by the expansion of exploding gun powder. What about a railgun? This weapon can fire a projectile at tremendous speeds without even using an expanding gas. But how does it work?
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Quantum experiment could offer proof of a parallel world
From many-worlds to multiverses, physicists have had to come up with some pretty bizarre theories to explain the strange world of quantum mechanics, many of which sound less like science and more like science fiction. Now you can add parallel worlds to that list, according to Physorg.com.
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How the Hell Does Quantum Mechanics Work Anyway?
People that know about quantum mechanics tend to talk about it very breezily, leaving us mortals behind. Be left behind no longer, though, with this wonderful little video.
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How to Cool a Quantum Computer
A team of theoretical physicists at the University of Hamburg, Germany have just published the schematics for a method that tackles the biggest hurdle in quantum computing: keeping everything cool.
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Schrödinger's cat caught on quantum film
The patron animal of quantum theory poses for a unique portrait in which the camera and the sitter don't share a single photon – except by entanglement
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The Feynman Lectures on Physics
Feynman • Leighton • Sands
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How Much Does It Cost to Make Ice?
Using the physics and economics, the author estimates how much money it costs to turn water into ice.
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Physicists Have A New Theory On How The Egyptians Built The Pyramids
For millennia people have looked at the Great Pyramid of Giza and thought, “How on Earth did they build that?” The other Seven Wonders of the Ancient World have long gone, but the Great Pyramid still looks good despite predating the other six wonders by almost two thousand years. What did the Egyptians know about building that the rest of the ancient world did not?
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3 Incredible Scientific Theories About The Multiverse
As we look at this week’s evidence of gravitational waves and cosmic inflation, it’s becoming increasingly hard to believe that the observable universe we live in is the only universe there is. Even modern science is laying down its “knowing” cap in the face of such a grand and complex puzzl
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Time Travel Simulation Resolves “Grandfather Paradox”
What would happen to you if you went back in time and killed your grandfather? A model using photons reveals that quantum mechanics can solve the quandary—and even foil quantum cryptography
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A theoretical cousin of the Higgs Boson
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Stephen Hawking: God particle could wipe out the universe
In a preface to new book, the famed physicist fears the Higgs Boson becoming unstable and causing a "catastrophic vacuum decay." But how likely is that really?
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A Black Hole Doesn't Die -- It Does Something A Lot Weirder
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Scientists Create Solid Light
On a late summer afternoon it can seem like sunlight has turned to honey, but could liquid—or even solid—light be more than a piece of poetry? Princeton University electrical engineers say not only is it possible, they’ve already made it happen. In Physical Review X, the researchers reveal that they have locked individual photons together so that they become like a solid object.
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