Physics

Researchers at the California Institute of Technology (Caltech) say they’ve found a way to levitate and propel objects using only light – though, for the time being, the work remains theoretical. They hope the technique could be used for “trajectory control of ultra-light spacecraft and even laser-propelled light sails for space exploration,” according to a
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Back in 2015, scientists found something amazing – a classic formula for pi hidden in the world of quantum physics. Pi is the ratio between a circle’s circumference and its diameter, and is incredibly important in pure mathematics. But this was the first time scientists had found it “lurking” in the world of physics, when
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It’s been a year since the renowned and profoundly influential physicist Stephen Hawking passed away, and the Royal Mint has honoured his legacy in the form of a new commemorative 50 pence coin. If you’ve ever been concerned that British currency doesn’t feature enough astrophysical equations, we have good news. Although the collector’s item, sold on
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In November, Chinese researchers announced that the Experimental Advanced Superconducting Tokamak (EAST) reactor — an “artificial sun” designed to mimic the nuclear fusion process the real Sun uses to generate energy — had hit a milestone by achieving an electron temperature of 100 million degrees Celsius. Now, officials are saying they believe they’ll wrap up
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Scientists may have just taken a step towards experimentally proving the existence of Hawking radiation. Using an optical fibre analogue of an event horizon – a lab-created model of black hole physics – researchers from Weizmann Institute of Science in Rehovot, Israel report that they have created stimulated Hawking radiation. Under general relativity, a black
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Martin Rees, a well-respected British cosmologist, made pretty bold statement late last year when it comes to particle accelerators: there’s a small, but real possibility of disaster. Particle accelerators, like the Large Hadron Collider, shoot particles at incredibly high speeds, smash them together, and observe the fallout. These high speed collisions have helped us discover
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