Viewpoints

Cool and Heavy

Cool and Heavy

January 26, 2015

Lin Tian

A new scheme for cooling a mechanical oscillator in a cavity may allow the observation of quantum effects on macroscopic objects and the realization of ultrasensitive gravitational-wave detectors.

Do Quantum Superpositions Have a Size Limit?

Do Quantum Superpositions Have a Size Limit?

January 20, 2015

George C. Knee

An atom’s walk in an optical lattice is used to test a key principle of quantum physics.

Orbital Engineering, By Design

Orbital Engineering, By Design

January 12, 2015

Scott A. Chambers

In transition-metal oxides, the ability to control which atomic orbitals are occupied by electrons could be used to develop materials with new functionalities.

Imaginary Magnetic Fields in the Real World

Imaginary Magnetic Fields in the Real World

January 5, 2015

Nerses Ananikian and Ralph Kenna

Imaginary magnetic fields predicted by the fundamental theory of phase transitions can be realized experimentally.

Synopses

Energetic Flags

Energetic Flags

January 29, 2015

A piezoelectric flag coupled to an inductive electrical circuit can be an efficient energy-harvesting device.

Fixing a Million-Year Clock

Fixing a Million-Year Clock

January 28, 2015

A better measure of an iron isotope’s half-life may lead to new ways of dating astrophysical events that unfold over millions of years.

Shocking Pressures

Shocking Pressures

January 27, 2015

A two-step scheme for inertial confinement fusion generates gigabar shock pressures in a fuel target.

Waste Disposal in Aquatic Embryos

Waste Disposal in Aquatic Embryos

January 26, 2015

Protrusions on the surfaces of developing aquatic embryos may ensure that waste and toxins are effectively transported away from the organism.

Focus

Big Twist for Electron Beam

Big Twist for Electron Beam

January 23, 2015

Researchers generated an electron beam with very high orbital angular momentum—potentially good for atomic-scale images of the magnetism in materials.

Model Demonstrates Cause of Heart Arrhythmia

Model Demonstrates Cause of Heart Arrhythmia

January 16, 2015

A simple model of heart tissue that represents the architecture of cell-cell communication more realistically than previous models spontaneously develops faulty electrical waves that mimic a dangerous heart condition.

Notes from the Editors

Notes from the Editors: Highlights of the Year

Notes from the Editors: Highlights of the Year

December 22, 2014

A look back on our favorite stories from 2014.

Announcements

Celebrating the 2015 International Year of Light

Physics revisits six specific advances in the science and technology of light that were reported in the APS journals.


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