Viewpoints

X-Ray Imaging of a Single Virus in 3D

X-Ray Imaging of a Single Virus in 3D

March 2, 2015

Keith A. Nugent

An x-ray laser has imaged the three-dimensional structure of the mimivirus by combining hundreds of measurements on single virus particles.

Electron Model Captured by Atom Pair

Electron Model Captured by Atom Pair

February 23, 2015

Adam Kaufman and Cindy Regal

A simple system consisting of a pair of atoms in a two-site “minicrystal” is able to reproduce the physics of a widely used model of electrons in a solid.

History is Written by the Survivors

History is Written by the Survivors

February 17, 2015

Hanna Salman

A new approach is able to quantify the environmental effects on an evolving organism by analyzing just a small number of surviving individuals.

Making Waves with DNA

Making Waves with DNA

February 9, 2015

Irving R. Epstein

Strands of DNA can be used to generate waves of chemical reactions with programmable shape and velocity.

Synopses

Predicting the Quantum Past

Predicting the Quantum Past

March 5, 2015

Predictions for a quantum measurement are improved by probing the system after the measurement and evolving a model backward in time.

Magnetic Cells

Magnetic Cells

March 4, 2015

Magnetic nanoparticles can be used to prepare and characterize multicellular aggregates that serve as model systems for biological tissues.

Neutrino Test of Lorentz Invariance

Neutrino Test of Lorentz Invariance

March 3, 2015

Oscillations in atmospheric neutrinos show no sign of violating a fundamental principle of relativity.

Heat-Carrying Dark Matter in Sun

Heat-Carrying Dark Matter in Sun

February 26, 2015

The presence of a certain type of dark matter in the Sun’s core may solve discrepancies between standard solar models and observations.

Focus

Quantum Mechanics Could Improve Radar

Quantum Mechanics Could Improve Radar

February 27, 2015

A proposed device would extend a quantum entanglement scheme previously demonstrated for visible photons into the microwave regime, where it could boost radar performance.

A Detector to Track Antineutrinos

A Detector to Track Antineutrinos

February 20, 2015

A proposed detector for low energy antineutrinos would reveal the particles’ trajectories, potentially allowing more detailed studies of Earth’s radioactivity and of nuclear reactors.

Notes from the Editors

2015 AAAS Meeting—Seeing is Believing

2015 AAAS Meeting—Seeing is Believing

February 26, 2015

New imaging and detection tools of interest to physicists were the focus of many talks at the 2015 AAAS Meeting in San Jose.

Announcements

APS March Meeting 2015 – San Antonio

Join the Physics editors and scientist Sharon Glotzer for her talk on building robot-like machines with colloidal particles.


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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