- 2961 PHYSICS - spooky physics in 2020.
----------------------------- 2961 - PHYSICS - spooky physics in 2020
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------------------------ QUARK GLUON SOUP?
- Science is seeing tracks of the first heavy ion collisions in the ALICE experiment at the CERN cyclotron in Switzerland. Such collisions are likely to create conditions closer to the beginning of the universe than ever before, though on a much smaller scale.
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- At another atom collider in the United States science witnessed another amazing feat of physics. At the “Brookhaven's Relativistic Heavy Ion Collider” scientists had created a "quark-gluon soup" where protons and neutrons had broken up into their constituent building blocks of quarks and gluons.
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- It took extremely powerful collisions of gold atoms in the accelerator to achieve the temperatures necessary at 4 trillion degrees Celsius. These conditions are 250,000 times hotter than the center of the Sun and similar to temperatures seen just after the birth of the universe. They were the hottest temperatures ever reached on Earth.
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--------------------------- AMAZING PARTICLE TRIPLETS?
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- Using lithium atoms, scientists recreated an ancient mathematical symbol that had been seen as far back as the second century in Afghan Buddhist art. The symbol, called the Borromean rings, depicts three rings linked together. If any ring were removed, they would all come apart.
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--------------------------- LIGHT BENDS MATTER?
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- While it's easy to see matter bending light, just look through a prism, it's rare to find light bending matter. Researchers assembled flat ribbons of Nanoparticles, tiny bits of matter only billionths of a meter long, in a darkened laboratory.
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- Then when the ribbons were exposed to light, they curled up into spirals. The results could help engineers design new types of optics and electronics.
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--------------------------- LEVITATING MAGNETS?
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- The Levitated Dipole Experiment (LDX) reactor is housed inside a 16-foot-diameter steel structure in a building on the MIT campus that also houses MIT’s other fusion reactor, a tokamak called Alcator C-mod.
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- Nuclear fusion, the melding of atomic nuclei that happens inside stars, is a long-sought goal on Earth. If scientists can achieve it, it could offer a powerful source of energy with few negative environmental consequences.
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- Scientists took a step closer to this goal when they announced they'd built a levitating magnet that created some of the conditions thought to be necessary for fusion. By suspending a giant donut-shaped magnet in midair, researchers were able to control the motion of an extremely hot gas of charged particles contained within the magnet's outer chamber. The density of this gas was close to what's needed for nuclear fusion, the researchers said.
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------------------------------- NEW ANTIMATTER PARTICLES?
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By smashing particles together at close to light speed inside an atom smasher, scientists created a never-before-seen type of matter: an anti-hypertriton.
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- This particle is weird in many ways. First, it's not normal matter, but its eerie opposite, called antimatter, which annihilates whenever it comes into contact with regular mass. Second, the anti-hypertriton is what's called a "strange" particle, meaning it contains a rare building block called a strange quark, which isn't present in the protons and neutrons that make up regular atoms.
The experiment was conducted at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory in Upton, N.Y.
--------------------------- KNOTS OF LIGHT?
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- Light may seem to travel a straight line, but sometimes it gets twisted into knots. Researchers reported using a computer-controlled hologram to twist beams of laser light into pretzel shapes. The holograms, which direct the flow of light, were specially created to send light in certain directions and shapes.
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- The researchers used a field of mathematics known as knot theory to study the resulting loops. These swirls of light, called optical vortices, could have implications for future laser devices, the physicists said.
--------------------------- SPOOKY ENTANGLEMENT?
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- Physicists exposed four entangled particles to a noisy environment to see if they held on to their quantum entanglement. One of the strangest predictions of the theory of quantum mechanics is that particles can become "entangled" so that even after they are separated in space, when an action is performed on one particle, the other particle responds immediately.
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- Scientists measured entanglement in a new kind of system – two separated pairs of vibrating particles. Previous experiments had entangled the internal properties of particles, such as spin states, but this was the first time scientists had entangled the particles' pattern of motion, which is a system that resembles the larger, everyday world.
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January 2, 2020 PHYSICS - spooky physics in 2020 2961
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