atomic physics

Scientists are promoting a proposed experiment, nicknamed the "atomic cannon," that would test gravity with unprecedented precision using atoms. If results deviate from predictions, it could reveal cracks in Einstein's general theory of relativity and point toward new physics. Coverage highlights the potential for a major shift in how physicists understand gravity.

Quotes attributed to the German theoretical physicist Arnold Sommerfeld are being shared and discussed on social media under science and philosophy hashtags. Sommerfeld, a pioneer of atomic theory and quantum physics mentor to several Nobel laureates, remains a popular figure for reflections on science. The engagement is modest, indicating a niche audience of physics enthusiasts.

A research team in Hong Kong reports a quantum metrology advantage described as limitless, meaning measurement precision using quantum resources may improve beyond previously assumed bounds. The finding, highlighted by physics-focused media, could matter for ultra-precise sensing technologies such as atomic clocks and gravitational detectors. Details of the results and independent verification have not yet been widely reported.

New analysis of uranium cubes from Germany's wartime nuclear program indicates Nazi Germany was far from building an atomic bomb. The findings, reported by Science, suggest the program lacked the material, scale and coordination needed to produce a weapon, reinforcing historians' view that the German effort never came close to matching the Manhattan Project.

Physicists report a tabletop experiment using ultracold atoms to simulate the creation of particles, mimicking processes normally associated with quantum fields in extreme environments such as the early universe. By controlling atoms cooled to near absolute zero, researchers can reproduce conditions where quantum fluctuations turn into real excitations. The work, published by the American Physical Society, offers a new way to test fundamental physics that is otherwise out of reach of direct experiments.

A Nature retrospective revisits the 1966 Nobel Prize in Physics, awarded to Alfred Kastler for the discovery and development of optical methods for studying atomic spectra, work known as optical pumping. The piece highlights how the achievement rested on collaboration across laboratories and laid foundations for later developments in atomic physics and laser science.

The 1986 Nobel Prize in Physics is being recalled for recognising electron microscopy and scanning tunnelling microscopy, technologies that use electrons instead of light to image matter down to individual atoms. Ernst Ruska received half the prize for developing the electron microscope, while Gerd Binnig and Heinrich Rohrer shared the rest for the scanning tunnelling microscope at IBM Zurich, work that transformed nanoscience and materials research.

An image release describing an Attosecond Lab has circulated via science news outlets, putting a spotlight on laboratory research into attosecond-scale physics — the study of processes occurring on timescales of quintillionths of a second, such as electron motion in atoms. Little detail accompanies the item, and no specific institution, discovery, or researcher is named in connection with it.

A physics report examines research into the shapes of exotic nuclei, the short-lived atomic nuclei far from stability that scientists study in the lab. Understanding whether these nuclei are spherical, elongated or deformed helps refine models of nuclear structure and the forces binding protons and neutrons together.

New reporting argues that Nazi Germany's atomic program was even further from achieving a working nuclear reactor than Werner Heisenberg suggested after the war. The claim reignites a long-running historical debate over how close Germany came to a bomb and whether Heisenberg overstated his progress or deliberately stalled. Historians and readers are revisiting the wartime physics effort and its legacy.