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Search results for electromagnetic fields

Astronomy Apr 25, 2025

New framework suggests stars dissolve into neutrons to forge heavy elements

Understanding the origin of heavy elements on the periodic table is one of the most challenging open problems in all of physics. In the search for conditions suitable for these elements via "nucleosynthesis," a Los Alamos ...

Optics & Photonics Apr 25, 2025

New quantum optics theory proposes that classical interference arises from bright and dark states of light

Classical physics theories suggest that when two or more electromagnetic waves interfere destructively (i.e., with their electric fields canceling each other out), they cannot interact with matter. In contrast, quantum mechanics ...

Nanophysics Apr 24, 2025

Ultrafast plasmon-enhanced magnetic bit switching at the nanoscale

Researchers from Max Born Institute have demonstrated a successful way to control and manipulate nanoscale magnetic bits—the building blocks of digital data—using an ultrafast laser pulse and plasmonic gold nanostructures. ...

Astronomy Apr 24, 2025

Largest imaging spectro-polarimeter achieves first light at solar telescope

The U.S. National Science Foundation Daniel K. Inouye Solar Telescope, the world's most powerful solar telescope, operated by the NSF National Solar Observatory (NSO) near the summit of Maui's Haleakalā, reached a major ...

General 鶹Ժics Apr 23, 2025

Direct lab observation reveals key mechanism behind cosmic particle acceleration

Researchers from the University of Science and Technology of China (USTC) achieved the first direct laboratory observation of ion acceleration through reflection off laser-generated magnetized collisionless shocks. This observation ...

Optics & Photonics Apr 21, 2025

Researchers develop compact superradiant Smith-Purcell device with ultra-narrow linewidth

Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches passing over a periodic grating. In theory, the ultra-narrow spectral linewidth of S-SPR could be realized, ...

Condensed Matter Apr 21, 2025

Mathematical model modulates the anomalous Hall angle in a magnetic topological semimetal

When an electric current passes through some materials, it generates a voltage perpendicular to the direction in which the current is flowing and of an applied magnetic field. This physical phenomenon, known as the anomalous ...

Astronomy Apr 18, 2025

Magnetic fields can map the universe—here's how

Who knew that magnetic fields could be so useful? Astronomers are able to use magnetic fields to map our environment within the Milky Way using a technique called Faraday rotation.

Optics & Photonics Apr 17, 2025

Quantum surprise: Matter mediates ultrastrong coupling between light particles

A team of Rice University researchers has developed a new way to control light interactions using a specially engineered structure called a 3D photonic-crystal cavity. Their work, published in the journal Nature Communications, ...

Earth Sciences Apr 17, 2025

Scientists map fastest pathways for replenishing Central Valley groundwater

Depleted groundwater threatens communities, agriculture, and ecosystems in California's Central Valley, which produces much of the nation's fruit, vegetables, and nuts. But the same acres where farmers have long cultivated ...

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