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Geophysics

Viewpoint: Acoustic Experiments without Borders

A new approach to laboratory acoustic experiments could remove unwanted effects caused by the reflections of acoustic waves from the boundaries of the experimental setup. Read More »

COLLECTION

Collection: Where Are They Now?

For our ten-year anniversary, the editors of Physics look back at some of the past research we have covered and ask: What’s become of it? Read More »

Materials Science

Focus: Glue or Ink Improves Soft Metal Cuts

Coating a soft metal with any compound that adheres leads to smoother cuts because the coating makes the surface more brittle. Read More »

Cosmology

Synopsis: Ideal Mergers for Measuring Cosmic Expansion

Among gravitational-wave sources, the merger of a neutron star and a black hole may provide the most precise way to measure how fast the Universe is expanding. Read More »

Fluid Dynamics

Synopsis: Beat Strong, My Liquid Gallium Heart

Applying a current across a drop of liquid gallium induces an oscillatory motion reminiscent of that of a beating heart. Read More »

Cosmology

Synopsis: A Closer Look at Cosmic Dust

Simulations provide a detailed picture of the emission of dust grains in our Galaxy, which is known to interfere with measurements of the cosmic microwave background. Read More »

Condensed Matter Physics

Viewpoint: A Hot Topic in the Quantum Hall Effect

Heat transport studies of fractional quantum Hall systems provide evidence for a new phase of matter with potential applications in fault-tolerant quantum computation. Read More »

Atomic and Molecular Physics

Synopsis: Collective Spin Behavior in an Ultracold Quantum Gas

Researchers have spotted a never-before-seen collective spin oscillation in a Bose-Einstein condensate of chromium atoms. Read More »

Atomic and Molecular Physics

Synopsis: Measured Dissociation Energy Doesn’t Match Theory

A precision measurement of the energy needed to break molecular hydrogen apart disagrees with recent calculations. Read More »

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