Issues

For the first time, the waves have been shown to exist across the entire range of superconducting cuprates.

Built primarily for fundamental neutrino physics, the KamLAND detector deep inside a Japanese mineshaft proves its usefulness for geology.

Researchers combine optical trapping and frequency comb technology to control and measure the interaction of light with degenerate quantum gases.

Equations inspired by population-dynamics theory may help explain drizzles, downpours, and disappearing clouds.

Using a single nonlinear optical element, researchers have entangled dozens of the comb’s optical modes.

After a period of expansion, Brazilian science is shifting emphasis from quantity to quality, with an eye toward reaping benefits for society.

Partnerships with universities could bolster the competitiveness of US corporations.

Tight money leads to increased emphasis on tokamak plasma physics and the shuttering of some exploratory experiments.

Homeland Security unveils new policy to use off-the-shelf systems in preventing the smuggling of nuclear materials.

Based on the physics of Newton and Laplace, the big brass tide-predicting machine designed by Lord Kelvin was crucial for the success of the Normandy invasion in World War II.

Dimensional analysis, a framework for drawing physical parallels between systems of disparate scale, affords key insights into natural phenomena too expansive and too energetic to replicate in the lab.

For a few weeks every 32 years, both the Ptolemaic and Copernican predictions for the position of Mars are off by close to 5 degrees—a problem first noticed by Tycho Brahe.

Armed with a simple diffraction-based model, an acoustic oceanographer can bounce sound off marine animals to learn important information about their size and orientation.