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Physics-based model helps pedestrians and cyclists avoid city pollution
Follow the particulates: Snapshot of airborne pollution produced when a car brakes. (Courtesy: Adapted from Si, Run and Stafford, Jason 2024 R. Soc. Open Sci. 11...
View ArticleObjects with embedded spins could test whether quantum measurement affects...
A new experiment to determine whether or not gravity is affected by the act of measurement has been proposed by theoretical physicists in the UK, India and the Netherlands. The experiment is similar to...
View ArticleMulti-qubit entangled states boost atomic clock and sensor performance
Frequency measurements using multi-qubit entangled states have been performed by two independent groups in the US. These entangled states have correlated errors, resulting in measurement precisions...
View ArticleOrbital angular momentum monopoles appear in a chiral crystal
Magnets generally have two poles, north and south, so observing something that behaves like it has only one is extremely unusual. Physicists in Germany and Switzerland have become the latest to claim...
View ArticleCosmic antimatter could be created by annihilating WIMPs
Weakly interacting massive particles (WIMPs) are prime candidates for dark matter – but the hypothetical particles have never been observed directly. Now, an international group of physicists has...
View ArticleEco-friendly graphene composite recovers gold from e-waste
A new type of composite material is 10 times more efficient at extracting gold from electronic waste than previous adsorbents. Developed by researchers in Singapore, the UK and China, the...
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Imaging method could detect Parkinson’s disease up to 20 years before...
Researchers at Tel Aviv University in Israel have developed a method to detect early signs of Parkinson’s disease at the cellular level using skin biopsies. They say that this capability could enable...
View ArticleDaily adaptive proton therapy employed in the clinic for the first time
Adaptive radiotherapy – in which a patient’s treatment is regularly replanned throughout their course of therapy – can compensate for uncertainties and anatomical changes and improve the accuracy of...
View ArticleOptical technique measures intramolecular distances with angstrom precision
Physicists in Germany have used visible light to measure intramolecular distances smaller than 10 nm thanks to an advanced version of an optical fluorescence microscopy technique called MINFLUX. The...
View ArticleTwo distinct descriptions of nuclei unified for the first time
In a new study, an international team of physicists has unified two distinct descriptions of atomic nuclei, taking a major step forward in our understanding of nuclear structure and strong...
View ArticleChip-based optical tweezers manipulate microparticles and cells from a distance
Optical traps and tweezers can be used to capture and manipulate particles using non-contact forces. A focused beam of light allows precise control over the position of and force applied to an object,...
View ArticleBursts of embers play outsized role in wildfire spread, say physicists
New field experiments carried out by physicists in California’s Sierra Nevada mountains suggest that intermittent bursts of embers play an unexpectedly large role in the spread of wildfires, calling...
View ArticleMysterious brown dwarf is two objects, not one
Two independent studies suggest that the brown dwarf Gliese 229 B is not a single object, but rather a pair of brown dwarfs. The two teams reached this conclusion in different ways, with one using a...
View ArticleNanocrystal shape affects molecular binding
Molecules known as ligands attach more densely to flatter, platelet-shaped semiconductor nanocrystals than they do to spherical ones – a counterintuitive result that could lead to improvements in LEDs...
View ArticleAxion clouds around neutron stars could reveal dark matter origins
Hypothetical particles called axions could form dense clouds around neutron stars – and if they do, they will give off signals that radio telescopes can detect, say researchers in the Netherlands, the...
View ArticlePhysicists propose new solution to the neutron lifetime puzzle
Neutrons inside the atomic nucleus are incredibly stable, but free neutrons decay within 15 minutes – give or take a few seconds. The reason we don’t know this figure more precisely is that the two...
View ArticleBlack hole in rare triple system sheds light on natal kicks
For the first time, astronomers have observed a black hole in a triple system with two other stars. The system is called V404 Cygni and was previously thought to be a closely-knit binary comprising a...
View Article‘Buddy star’ could explain Betelgeuse’s varying brightness
An unseen low-mass companion star may be responsible for the recently observed “Great Dimming” of the red supergiant star Betelgeuse. According to this hypothesis, which was put forward by researchers...
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First human retinal image brings sight-saving portable OCT a step closer
First in human Image of a human retina taken with the Akepa photonic chip, showing the retinal layers and key clinical features used for disease diagnosis and monitoring. (Courtesy: Siloton) UK health...
View ArticleLightning sets off bursts of high-energy electrons in Earth’s inner radiation...
A supposedly stable belt of radiation 7000 km above the Earth’s surface may in fact be producing damaging bursts of high-energy electrons. According to scientists at the University of Colorado Boulder,...
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