Articles by Sam Jarman
Science X / Perseverance rover uncovers the role of water in Mars's mineral past
NASA's Perseverance rover has spent more than three and a half years exploring Mars's Jezero Crater, building up a remarkable catalog of mineral discoveries.
Phys.org / Mostly empty foam overturns assumptions of electron beam stopping
When physicists fire beams of fast electrons at materials, they often need to know exactly how much energy those electrons will lose as they travel through. Through new research published in Physical Review Letters, a team ...
Phys.org / Resilient quantum sensor monitors Earth's magnetic field from space for 10 months
From navigation to solar weather forecasting, many different areas of research require space-based sensors to measure Earth's magnetic field as accurately as possible at any given moment. So far, however, existing sensors ...
Phys.org / Physicists reveal universal speed limit on quantum information scrambling
Theoretical physicists in the US have discovered a "speed limit" on the time taken for quantum information to spread through larger systems. Publishing their results in Physical Review Letters, Amit Vikram and colleagues ...
Phys.org / AI slashes the time needed to design better heat-harvesting devices
From wearable technology to industrial heat recovery, thermoelectric generators which convert waste heat into electricity have an enormous range of potential applications. So far, however, designing high-performing versions ...
Phys.org / Deep under Antarctic ice, a long-predicted cosmic whisper finally breaks through in 13 strange bursts
A detector buried deep in Antarctic ice has captured the first experimental evidence of a predicted but never-before-seen phenomenon: radio pulses generated when high-energy cosmic rays slam into the ice sheet and trigger ...
Phys.org / More activity means less response in active materials
For some time, researchers have assumed that solid materials could gain more useful properties by making their microscopic components more active. Now, a team led by Jack Binysh at the University of Amsterdam has found that ...
Phys.org / Physicists revive 1990s laser concept to propose a next-generation atomic clock
Researchers in the US and Germany have unveiled a theoretical blueprint for an atomic clock driven by a highly synchronized laser, where atoms work in concert rather than independently. Publishing their results in Physical ...
Phys.org / A long-sought quantum computing milestone arrives as fermionic atom gates top 99% accuracy
Two independent research teams have each demonstrated collisional quantum gates using fermionic atoms: a long-sought milestone in quantum computing where logic operations are performed through the direct physical overlap ...
Phys.org / Laser-plasma accelerator drives free-electron laser for record 8 hours
For the first time, researchers have demonstrated that a laser-plasma accelerator can reliably drive a free-electron laser for more than eight hours. Published in Physical Review Accelerators and Beams, the result was achieved ...
Phys.org / A monster black hole appeared first, then its galaxy began to grow around it
Using observations gathered by the James Webb Space Telescope (JWST), an international team of astronomers have revealed that one supermassive black hole in the early universe must have formed before a galaxy developed around ...
Phys.org / Droplet impacts reveal surprising physics in shear-thickening fluids
From ketchup to quicksand, non-Newtonian fluids have long fascinated and puzzled scientists. Unlike ordinary fluids, their flow properties change depending on how much force is applied, but the precise mechanics governing ...
Phys.org / A tabletop ring of atoms brings the universe's doomsday vacuum collapse into the lab
Physicists in China have simulated the effect of "false vacuum decay": a phenomenon believed to play out constantly in the seemingly empty expanses of space, and which one theory even suggests could bring an abrupt end to ...
Phys.org / 'Ghost tunnels' guide sound waves in one direction while staying invisible to others
Acoustic metamaterials are a fast-evolving family of materials which manipulate sound waves in ever more advanced ways. Now, a team led by Changqing Xu at Nanjing Normal University in China has engineered an acoustic metamaterial, ...
Phys.org / Astronomers find the strongest evidence yet for the universe's first stars
For decades, astronomers were only able to study the universe's very first stars using theoretical models. Now, observations from the James Webb Space Telescope (JWST) have revealed what may be the most compelling evidence ...