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כתבות אחרונות מאתר 'Phys'
Phys

Fiber setup compresses mid-infrared pulses to 187 femtoseconds using just 80 watts‎

Ultrashort mid-infrared (mid-IR) laser pulses are essential for applications such as molecular spectroscopy, nonlinear microscopy, and biomedical imaging, but their generation often relies on complex and power-intensive systems that are difficult to implement outside of specialized laboratories. These systems usually require high pump powers, elaborate optical setups, and precise alignment, which can limit their widespread adoption and practical use in everyday research and clinical settings.

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Phys

Microplastic biofilms carry genes that could alter nutrient cycling in estuaries‎

A study led by William & Mary's Batten School of Coastal & Marine Sciences & VIMS and published in FEMS Microbiology Ecology reveals that microbial communities growing on microplastics in the Chesapeake Bay carry the genetic potential to remove nitrogen from the water and break down petroleum-related compounds. The manuscript was selected as the journal's best paper of 2025, which recognizes researchers who have pushed the boundaries of knowledge in the field of microbiology.

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Phys

Female aggression, not just mate choice, may speed mosquitofish speciation‎

A new study reveals that behavioral isolation between populations of Bahamas mosquitofish is driven primarily by the actions of females—not just through mating choice behaviors, but also through sometimes violent resistance. The work demonstrates the impact of the ecological environment on behavior and subsequently on speciation. The findings are published in the journal BMC Ecology and Evolution.

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Phys

Florida's most at-risk bat moves into safer artificial roosts‎

Finding bats in the attic or under roof tiles is no homeowner's idea of fun. But Florida's endangered bonneted bats have few natural options left. With a dwindling number of large, old trees with cavities—their preferred habitat—and exotic species competing for what's left, many bonneted bats have moved into homes, leading to panicked humans and calls to professionals who can oust the squatters.

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Phys

Uncovering the hidden bacteria often mistaken for cholera‎

Scientists have created a genomic blueprint for Aeromonas bacteria, which can cause antibiotic-resistant diarrheal disease—with symptoms often misidentified as cholera—in humans and animals.

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Phys

Fish study shows that sexual harassment behavior might matter for ecosystems‎

For decades, ecologists have known that how a species looks or eats affects its environment. But a new study by researchers at the University of California, Santa Cruz, shows that social behavior related to mating can be an equally powerful ecological force. The research is published in the journal Proceedings of the Royal Society B: Biological Sciences.

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Phys

Generative AI could empower girls in STEM‎

Generative AI (GenAI) has significant potential to boost girls' confidence, agency, and participation in STEM subjects—but new research shows that realizing such potential depends on how teachers use GenAI in the classroom. The findings are published in the journal Education and Information Technologies.

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Phys

Stacked quantum materials enable precise spin control without external magnetic fields‎

Spintronics—a technology that harnesses the electron's magnetic quantum states to carry information—could pave the way for a new generation of ultra-energy-efficient electronics. Yet a major challenge has been the ability to control these delicate quantum properties with sufficient precision for practical applications. By combining different quantum materials, researchers at Chalmers University of Technology have now taken a decisive step forward, achieving unprecedented control over spin phenomena. The advance opens the door to next-generation low-power data processing and memory technologies.

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Phys

Simulations suggest a breakthrough in understanding how turbulence develops‎

A new study revisits a century-old question about how turbulence starts. The findings could potentially influence not only aircraft engineering but even the design of mechanical heart valves, and treatment of heart disease. The study is published in Scientific Reports.

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Phys

Fluid simulation at unprecedented scale provides toolkit for fundamental physics and applied fluid engineering‎

What governs the speed at which raindrops fall, sediment settles in river estuaries, and matter is ejected during a supernova? These questions circle around one, deceitfully simple factor: the rate at which a fluid filled with particles mixes with a particle-free one. Raindrops travel from one layer of air to another; sediment falls from river to seawater, and ejecta travels from the exploding star through the surrounding dust cloud. The same principle dictates sediment mixing in rising smoke, dust storms, nuclear explosions, hydrocarbon refining, metal smelting, wastewater treatment, and more.

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