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כתבות אחרונות מאתר 'Phys'
Phys

Modeling reveals Sydney's 1789 smallpox outbreak killed as many as 220,000 indigenous Australians‎

Groundbreaking modeling has revealed that as many as 220,000 Indigenous Australians died in a devastating 1789 smallpox outbreak that originated in Sydney, tracing its origins to the First Fleet. Soon after British ships arrived, smallpox swept through First Nations communities in the Sydney area, and many died as a result. The study found that the epidemic had a devastating demographic impact and ramifications for how First Nations people resisted colonization and their capacity to manage the country, with the impact still being felt today.

10:06
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Phys

Q&A: What influences teens' career expectations?‎

Adolescents in both the United States and the United Kingdom have become increasingly ambitious about their future careers over the past two decades, according to a new study by researchers at Penn State. The team also found that family socioeconomic background plays a different role depending on the types of occupations students expect to pursue, with relatively small socioeconomic differences among American students aspiring to the highest-status careers.

06:17
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Phys

Q&A: 'Lawbreakers' or 'like us'? Exploring how partisans think about immigration‎

Interviews with political activists in Southern California showed stark differences in how migrants are viewed: either "like us" and deserving of rights or lawbreakers undeserving of social belonging and benefits.

05:44
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Phys

What are 'fire clouds', the ominous phenomenon seen in France?‎

Firefighters battling devastating fires in France have had to contend with a new threat: immense fire clouds that create their own wind and even lightning that can spark fresh blazes.

05:28
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Phys

Extreme heat increases the risk of workplace injuries across Canada‎

Heat warnings have stretched across Canada this summer, from Atlantic Canada and southern British Columbia to the Prairies, central Canada and the Northwest Territories.

05:01
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Phys

Q&A: Training the next generation of coastal scientists‎

Burying underwear in soil isn't a typical science lesson. But for students on Hornby Island, it's one way they can learn how seaweed supports local ecosystems.

04:48
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Phys

New sensing method measures laser-cutting depth by tracking vaporization recoil‎

Laser dicing, a technique that uses focused laser pulses to separate individual chips from a semiconductor wafer, is increasingly favored over mechanical blade cutting because it can process delicate, low-strength materials with minimal physical stress. However, achieving proper yield requires precise control over the process.

04:27
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Phys

Diet reveals what life was like 2,700 years ago in an Italian community: Gender inequality, social status and migration‎

An international study led by the Universities of Córdoba and Pisa used isotopic analysis to reconstruct the dietary traces left in human remains found in an Italian necropolis, revealing what daily life was like in that community 2,700 years ago. Despite the passage of time, certain patterns of behavior recur: diet, human mobility, gender differences and the role of funerary symbolism in signifying social status.

04:02
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Phys

Seawater samples may offer early clues to changing reef health‎

Doctors can often detect diseases in humans using minimally invasive methods, like blood or urine tests, before symptoms become severe. Now, researchers at the Woods Hole Oceanographic Institution (WHOI) are applying a similar concept to coral reefs, showing that the water surrounding reefs contains chemical and microbial signals that could reveal changes in ecosystem health long before those changes are visible.

03:50
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Phys

Water's local asymmetry drives proton hopping between molecules, simulations reveal‎

Complex simulations—the most intricate of their kind to date—carried out by an international research team led by scientists at Heidelberg University's Institute for Physical Chemistry, have revealed how water governs the way protons move through it. Using their modeling, researchers from Cambridge (U.K.), Bochum, Dijon (France) and Heidelberg were able to trace, in full quantum detail, the movements of a proton shared among six water molecules. At its core, the work addresses how a proton moves through water: not as a single particle drifting along, but by "hopping" from one molecule to the next.

03:50
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