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כתבות אחרונות מאתר 'Phys'
Phys

Helping lobster hatcheries safeguard genetic diversity‎

Some lobster mothers produce offspring that are far more likely to survive—in findings that could help safeguard lobster diversity. University of Exeter researchers, working in partnership with the National Lobster Hatchery (NLH) in Cornwall, studied European lobsters that survived the first few weeks of life. The paper, published in the journal Aquaculture, is titled "Hatchery lobster releases risk genetic bottlenecking via survival skews with maternal effects."

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Phys

How did humans develop sharp vision? Lab-grown retinas show likely answer‎

Humans develop sharp vision during early fetal development thanks to an interplay between a vitamin A derivative and thyroid hormones in the retina, Johns Hopkins University scientists have found. The findings could upend decades of conventional understanding of how the eye grows light-sensing cells and could inform new research into treatments for macular degeneration, glaucoma, and other age-related vision disorders. Details of the study, which used lab-grown retinal tissue, are published today in Proceedings of the National Academy of Sciences.

21:35
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Phys

Syntax discovered in the warbling duets of wild parrots‎

With a few minutes of searching, anyone can find videos online of chatty birds: macaws talk to their keepers, cockatoos sing to the camera, corvids mimic the jarring sounds of construction sites. Research has shown that some birds can understand and use words in context—so, when Polly speaks up from inside her cage, she may really want a cracker—but scientists know far less about how birds use their vocal abilities in the wild. Christine Dahlin, professor of biology at the University of Pittsburgh at Johnstown, is working to change that.

21:35
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Phys

Fossil evidence reveals how gray wolves adapt diets to climate change‎

Gray wolves adapt their diets as a result of climate change, eating harder foods such as bones to extract nutrition during warmer climates, new research has found. The study, led by the University of Bristol in collaboration with the Natural History Museum, and published in Ecology Letters, has implications for wolf conservation across Europe and beyond.

21:35
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Phys

Advancing porous materials: Scientists create solar-powered water treatment material‎

Brazilian scientists have made advances in an area recognized by the 2025 Nobel Prize in Chemistry: the development and application of metal-organic frameworks (MOFs). These are porous crystalline materials that have the potential to revolutionize environmental and energy technologies. The study involved researchers affiliated with the Center for Development of Functional Materials based at the Federal University of São Carlos (UFSCar).

21:35
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Phys

Hologram processing method boosts 3D image depth of focus fivefold‎

Researchers from the University of Tartu Institute of Physics have developed a novel method for enhancing the quality of three-dimensional images by increasing the depth of focus in holograms fivefold after recording, using computational imaging techniques. The technology enables improved performance of 3D holographic microscopy under challenging imaging conditions and facilitates the study of complex biological structures.

21:35
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Phys

New MOF material achieves real-time fluoride removal and detection in water‎

Recently, a research team led by Prof. Kong Lingtao at the Institute of Solid State Physics, the Hefei Institutes of Physical Science of the Chinese Academy of Sciences developed a new metal-organic framework (MOF)-based material capable of efficiently removing fluoride ions from water while providing real-time visual detection. This breakthrough addresses key limitations of conventional defluoridation methods, which often suffer from low efficiency and separate processes for removal and monitoring.

21:35
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Phys

Shaping carbon fiber with electricity: Wireless voltage pulses drive reversible bending‎

Controlled manipulation of fibers that are as thin as or even thinner than human hair is a real challenge. Despite technological development, the precise and reversible change of the microfibers' orientation is not easy. The interdisciplinary team of researchers from the Institute of Physical Chemistry, Polish Academy of Sciences, has recently developed a way to control the shape of microfibers with electricity. This brings us closer to a novel technical solution in micromechanics and soft robotics.

21:35
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Phys

Hunting dark matter 'stars' that mimic black holes‎

Hypothetical dark matter stars known as "boson stars" could leave telltale ripples across the cosmos, offering researchers a new way to probe the invisible forces shaping the universe. In 2019, a strange event was observed in the depths of space. Called GW190521, the event sent out gravitational waves—invisible ripples in the universe—that were picked up on Earth. These waves appeared to mark the moment when two massive black holes, dozens of times the mass of our sun, collided and merged. Or at least, that was the initial theory.

21:35
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Phys

Time crystals could become accurate and efficient timekeepers‎

Time crystals could one day provide a reliable foundation for ultra-precise quantum clocks, new mathematical analysis has revealed. Published in Physical Review Letters, the research was led by Ludmila Viotti at the Abdus Salam International Center for Theoretical Physics in Italy. The team shows that these exotic systems could, in principle, offer higher timekeeping precision than more conventional designs, which rely on external excitations to generate reliably repeating oscillations.

21:35
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