Physics

Researchers Develop Home Acoustic Levitator

A research team at the University of Bristol, UK, has developed a relatively cheap and small acoustic levitator that is capable of holding samples of interest in mid-air. The TinyLev system is composed of the driver board and the single-axis levitator with 72 transducers (arranged as two surfaces, each containing …

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Physicists Experiment with ‘Super-Photons’

A team of physicists at the University of Bonn in Germany has developed a technique to create optical ‘wells’ for a photonic Bose-Einstein condensate. The artist’s rendering shows how potential ‘wells’ are created for photons in the microresonator through heating with an external laser beam (green). Image credit: David Dung, …

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Shortest Laser Pulse Lasts 53 Attoseconds

An international group of physicists and engineers, led by Professor Zenghu Chang of the University of Central Florida, has produced the shortest-ever laser pulse: a 53-attosecond X-ray flash. Professor Chang and co-authors broke the record for the shortest light pulse. Image credit: University of Central Florida. Attosecond pulses were first …

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Physicists Observe Hyperfine Spectrum of Antihydrogen

In a paper published in the August 3, 2017 issue of the journal Nature, physicists with the ALPHA collaboration, a multinational project based at CERN, report the first detailed observation of spectral lines from an antihydrogen atom, the antimatter counterpart of the simplest atom, hydrogen. Artist’s impression of a cloud …

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Physicists Observe Elusive Neutrino-Nucleus Interactions for First Time

A team of physicists with the COHERENT collaboration is the first to detect and characterize coherent elastic scattering of low-energy neutrinos off atomic nuclei. Coherent elastic neutrino-nucleus scattering. Image credit: COHERENT Collaboration. Neutrinos, miniscule subatomic particles that rarely interact with matter, are often described as ‘ghost-like.’ Chargeless and nearly without …

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Astrophysical Shock Waves Generated in the Lab

A Princeton-led team of researchers has discovered a revolutionary way to generate high-energy shock waves in the lab. Peering deep into the core of the Crab Nebula, this Hubble image reveals the beating heart of one of the most historic and intensively studied remnants of a supernova, an exploding star. The …

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