This Week in Physics — Measuring Decays with Rock Dating Implications

This Week in Physics Magazine — July 31, 2023 Viewpoint Measuring Decays with Rock Dating Implications Stephen Ellis Cox – July 31, 2023 Researchers revisit a neglected decay mode with implications for fundamental physics and for dating some of the oldest rocks on Earth and in the Solar System. synopsis How Proteins Control Embryonic Tissue Flow July 25, 2023 Experiments show that certain contractile proteins regulate the flow of tissue in a developing embryo by generating mechanical tensions and by controlling the tissue's fluidity. Focus Two Atoms Vibrate Like a Laser July 28, 2023 A laser for vibrational energy, rather than for light, operating in the quantum regime could teach researchers about the interplay between spin, vibration, and dissipation in quantum mechanics. synopsis A Pair of New Tetraquarks July 27, 2023 CERN's Large Hadron Collider has detected the signals of two new four-quark states that are unusual because of their charges and their quark compositions. Research News Express Delivery of Proton Therapy July 27, 2023 A new scheme could increase the efficiency of a high-dose cancer radiation therapy and mitigate patient discomfort by reducing particle loss in proton beams. Research News Two-Dimensional Crystal Found in a Nonequilibrium System July 25, 2023 Crystals cannot form in two-dimensional particle systems at equilibrium. A new study has found a regime where a crystal can form if the system is driven out of equilibrium. synopsis The Search for WIMPs Continues July 28, 2023 Two mammoth underground detectors have delivered more stringent upper limits on how strongly a putative dark matter candidate interacts with normal matter. synopsis A Broader Stance Can Stop a Sandy Slide July 25, 2023 Experiments show that an optimal distance between points of contact helps insects and other multilegged creatures avoid slipping down a steep granular slope. synopsis From Crystal to Nanowire July 26, 2023 Researchers have demonstrated a way to sift a database of crystalline compounds for structures that can be separated into useful one-dimensional materials. 1 Physics Ellipse, College Park, MD 20740 © 2023 American Physical Society | All rights reserved View Email Online You are receiving this message because you signed up to receive Physics Magazine email alerts or are a member of APS. Manage Email Preferences.

This Week in Physics — Thermodynamics Reveals Coordinated Motors in Sperm Tails

This Week in Physics Magazine — July 24, 2023 Research News Thermodynamics Reveals Coordinated Motors in Sperm Tails July 20, 2023 By monitoring fluctuations in the beating of macroscopic sperm tails, researchers retrieve information about the behavior of the nanoscale motors that drive tail beating. Research News Dark Star Hypothesis Sees the Light of Day July 20, 2023 Recent data from the JWST space observatory has identified several objects that are consistent with dark matter powered stars. Focus Error Rate Reduced for Scalable Quantum Technology July 24, 2023 A scalable system for controlling quantum bits demonstrates a very low error rate, which is essential for making practical devices. Viewpoint Wind Tunnel Experiments Challenge Turbulence Theory Andrew Bragg – July 24, 2023 Measurements conducted over an unprecedented span of conditions uncover universal behavior, but not the kind that theorists expected. synopsis "Order Up": A Pair of Photons July 18, 2023 Researchers use two clouds of rubidium vapor to generate, store, and simultaneously release two photons. synopsis Exciton Ensembles Manifest Coherence July 19, 2023 Evidence of coherent light emission from excitons in a 2D-material structure could inspire new quantum-technology applications. synopsis Fish Are Boosted by Cooperating Fin Currents July 21, 2023 Water flow around the fins of a fish intertwines in a pattern that maximizes swimming efficiency. Research News Art-Inspired Tape Is Both Strong and Weak July 18, 2023 Using carefully placed cuts, scientists have designed a sticky tape that is highly adhesive yet easy to remove. 1 Physics Ellipse, College Park, MD 20740 © 2023 American Physical Society | All rights reserved View Email Online You are receiving this message because you signed up to receive Physics Magazine email alerts or are a member of APS. Manage Email Preferences.

This Week in Physics — Measuring the Elasticity of Pressurized Iron

This Week in Physics Magazine — July 17, 2023 Viewpoint Measuring the Elasticity of Pressurized Iron Shanti Deemyad – July 17, 2023 Laboratory experiments elucidate the directions and speeds at which acoustic waves propagate in the type of iron that likely makes up Earth's core. Research News A More Efficient Superconducting Diode July 13, 2023 A superconducting strip allows more superconducting current to flow in one direction than in the other—achieving a stronger diode effect than previous devices. Viewpoint Performance Capacity of a Complex Neural Network Julia Steinberg – July 12, 2023 A new theory allows researchers to determine the ability of arbitrarily complex neural networks to perform recognition tasks on data with intricate structure. Research News Beer-Dancing Peanuts Explained July 12, 2023 The accumulation and bursting of carbon dioxide bubbles can cause a peanut in a glass of beer to repeatedly float and sink. The process may help in understanding phenomena in Earth's magmas. synopsis Confirming Gravitational Interactions are Equal and Opposite July 13, 2023 High-precision measurements of the Moon's orbit show that iron and aluminum feel and exert gravitational forces equally. synopsis Friction That Speeds Up an Object's Motion July 14, 2023 A friction-like quantum force could accelerate the motion of a rotating nanometer-diameter sphere when the sphere sits next to a graphene-coated surface. synopsis Shaken Atoms Change Quantum States July 11, 2023 Oscillating an optical lattice of Rydberg atoms at the right frequency causes the atoms to make electronic transitions, which can be useful for quantum processing techniques. 1 Physics Ellipse, College Park, MD 20740 © 2023 American Physical Society | All rights reserved View Email Online You are receiving this message because you signed up to receive Physics Magazine email alerts or are a member of APS. Manage Email Preferences.