Physics

<!––>A beam transformed: Optical transforms like tight focussing and total internal reflection, which gives rise to an evanescent field, can lead to out-of-plane polarization components and transverse spin, even for totally unpolarized input light. (Courtesy: Konstantin Bliokh/Diane Roth) It’s been almost a century since Wolfgang Pauli mooted the idea of “hidden rotation”: a new quantum
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Dose and dose-rate distributions produced for multiple treatment beams using (left) intensity-modulated proton therapy and (right) simultaneous dose and dose-rate optimization (SSDRO) for a 10 Gy fraction. The plan quality was best for the SDDRO method using nine beams. (Courtesy: Med. Phys. 10.1002/mp.14531) The primary goal of radiotherapy is to deliver a large radiation dose
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Radiation therapy providers in the US need to start preparing now for the introduction of the Radiation Oncology Alternative Payment Model (RO-APM) <!––>Alignment matters: Accuray is confident that its emphasis on hypofractionated and ultrahypofractionated radiotherapy will prove to be a good fit for the RO-APM. (Courtesy: Accuray) The Centers for Medicare and Medicaid Services (CMS)
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<!––>Through the looking glass: the ALICE detector at CERN is currently being upgraded and may soon provide further insights into hyperon interactions. (Image: Julien Ordan/CERN) Collisions between high-energy protons at the Large Hadron Collider (LHC) at CERN have given physicists a first glimpse at interactions involving exotic particles called hyperons. Researchers working on the ALICE
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Disagreements remain over spectral data, but the debate now considers pathways for life to survive the extreme conditions on Venus <!––>Turbulent world Computer simulated global view of Venus’ northern hemisphere (Courtesy: NASA/JPL) Do researchers still think that phosphine ’ a supposed signature of life ’ is present in the clouds of Venus? Could such a harsh environment
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<!––>Atomic-scale image of two interacting donors in silicon. Credit : CQC2T Two-qubit gates ’ the central building blocks of quantum computers ’ operate by exploiting tunnelling interactions between qubits. A team of researchers in Australia has now found a way to optimize these interactions in silicon by determining where the qubits should be positioned within
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