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.