Phys.org news
Phys.org / Mapping how Arctic groundwater will respond to thawing permafrost
Dalhousie researchers have revealed how Arctic aquifers—permeable layers of the ground that store and transmit water to rivers, lakes and terrestrial ecosystems—behave today and how these vital resources will change with ...
Phys.org / A clearer look at critical materials, thanks to refrigerator magnets
With an advanced technology known as angle-resolved photoemission spectroscopy (ARPES), scientists are able to map out a material's electron energy-momentum relationship, which encodes the material's electrical, optical, ...
Phys.org / Nanotubes with lids mimic real biology
When water and ions move together through channels only a nanometer wide, they behave in unusual ways. In these tight spaces, water molecules line up in single file. This forces ions to shed some of the water molecules that ...
Phys.org / Natural magnetic materials can control light in unprecedented ways
Imagine shining a flashlight into a material and watching the light bend backward—or in an entirely unexpected direction—as if defying the law of physics. This phenomenon, known as negative refraction, could transform ...
Phys.org / Perseverance rover completes first AI-planned drive on Mars
NASA's Perseverance Mars rover has completed the first drives on another world that were planned by artificial intelligence. Executed on Dec. 8 and 10, and led by the agency's Jet Propulsion Laboratory in Southern California, ...
Phys.org / As Rubin's survey gets underway, simulations suggest it could find about six lunar-origin asteroids per year
Most near-Earth asteroids are thought to drift in from the main asteroid belt. But a small subset may have a much closer origin: the moon. One intriguing example is 469219 Kamoʻoalewa (2016 HO3), an Earth quasi-satellite ...
Dialog / Infrared running of gravity offers a field-theoretic route to dark matter phenomena
The mystery of dark matter—unseen, pervasive, and essential in standard cosmology—has loomed over physics for decades. In new research, I explore a different possibility: Rather than postulating new particles, I propose ...
Phys.org / Focusing and defocusing light without a lens: First demonstration of the structured Montgomery effect in free space
Applied physicists in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated a new way to structure light in custom, repeatable, three-dimensional patterns, all without the use of ...
Phys.org / Jupiter's slimmer profile: Giant planet revealed to be narrower at equator
For over 50 years, we thought we knew the size and shape of Jupiter, the solar system's largest planet. Now, Weizmann Institute of Science researchers have revised that knowledge using new data and technology. In a new study ...
Phys.org / Our ocean's 'natural antacids' may act faster than we thought
Earth's ocean absorbs carbon dioxide from the atmosphere, helping to temper the impact of climate change but increasing ocean acidity. However, calcium carbonate minerals found in the seabed act as a natural antacid: Higher ...
Phys.org / Some bottled water is worse than tap for microplastics, study shows
Some brands of bottled water contain significantly higher levels of microplastics than tap water, according to new research by scientists who have developed a novel method for detecting these tiny particles.
Phys.org / 'Northwest Passage' mechanism of bile acid transport reveals a voltage-dependent pathway
In a study published in Nature on January 28, a research team led by Eric H. Xu (Xu Huaqiang) from the Shanghai Institute of Materia Medica of the Chinese Academy of Sciences, along with Ma Xiong from Renji Hospital, determined ...
