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כתבות אחרונות מאתר 'Phys'
Phys

Baby bugs must play 'game of roulette' to find survival partners before time runs out‎

Symbiosis, or the interaction of two unalike species, is common and often necessary for survival. In insects, symbiotic microbes often facilitate and promote the growth of hosts. Before the symbiotic collaboration can begin, however, hosts must acquire their symbionts. Sometimes, they are passed on from parents to offspring; other times, hosts must find their symbionts themselves—or face dire consequences if they fail to do so in a timely fashion, a new Frontiers in Microbiology study has shown.

07:21
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Phys

Wristwatch-like device enables assessment of health risks for astronauts on mission to the moon‎

Just a few hours before the Orion spacecraft crossed the sky en route to the moon on April 1, mechatronics engineer Rodrigo Trevisan Okamoto received confirmation he had been waiting for since the Artemis 2 mission was announced in 2023. The email from NASA stated that the crew of the first crewed mission to orbit the moon in half a century would carry a device developed by Okamoto and his team at Condor Instruments, a São Paulo-based startup.

06:51
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Phys

New UFO files offer no answers—but something is happening in the skies‎

The US Government has released a new trove of documents on cases of "unidentified anomalous phenomena" (UAPs)—many of which would have been described in the past as unidentified flying objects or UFOs—including photos, videos and reports of unexplained events sighted in the sky and in space.

06:22
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Phys

Rising storm floods are washing away wader nests—artificial eggs and incubation should only be last resort‎

Storm-driven sea floods are becoming more frequent as the climate warms, increasingly destroying the nests of threatened wader birds along the Baltic Sea coast. Waders are currently beginning their breeding season.

05:28
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Phys

These computer voices sound human enough to mislead, but one layer of speech still breaks the illusion‎

We are surrounded by computer-generated voices these days, from navigation systems and voice assistants to automated announcements. But how human do these voices actually sound? A recent study by the Max Planck Institute for Empirical Aesthetics (MPIEA) in Frankfurt am Main, Germany, published in the journal Speech Communication, shows that our perception is affected by three things: how something is said, what is being said, and whether we understand the language.

05:03
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Phys

Why are there so many lizards in Australia? The ancient climate holds a clue‎

If you travel around Australia, you will find an incredible diversity of lizards. The three-toed snake-tooth skink (Saiphos reticulatus), for example, is a peculiarly long and stumpy-legged reptile that burrows in rainforest and is covered in a brilliant orange and black-banded pattern. Alpine water skinks (Eulamprus kosciuskoi) are incredibly cold-tolerant and mottled with black and greenish yellow, like mossy rocks in mountain streams. Prickly forest skinks (Concinnia queenslandiae) are delightfully chunky-headed, spiky, armored rainforest gems.

04:15
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Phys

In quantum gravity, the cosmological constant may behave similar to the quantum Hall effect‎

Trying to solve quantum gravity is frustrating. We have made tremendous progress in quantum theory, but it seems that every time we find a new quantum technique, there's a reason it doesn't quite work with gravity. Take, for example, the case of quantum fluctuations and renormalization.

03:11
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Phys

Researchers identify stability range for piezoelectric glycine using nanoconfinement‎

Have you ever wondered if the simple building blocks of life could one day power our wearable electronics? Glycine, the simplest amino acid found in our bodies, has a superpower in its β-phase form: it is highly piezoelectric, meaning it can convert mechanical pressure into electricity. However, this phase of glycine is unstable, usually transforming into a non-piezoelectric α-phase before we can ever use it in a device. We wanted to see if we could trap this elusive phase in tiny spaces to keep it stable.

02:33
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Phys

Long-overlooked gene for deglycosylating enzyme in fish embryo identified‎

RIKEN researchers have determined the molecular structure of an enzyme that occurs in fish. This could shed light on molecular processes in a wide range of marine organisms. The work is published in the Journal of Biological Chemistry.

01:44
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Phys

Optical meta‑conveyors enable programmable nanomanipulation along arbitrary open paths‎

The task of gently transporting a microscopic particle from one point to another along a winding path, and then bringing it back using nothing more than a single, compact chip is a challenge we set out to address in our new study, now published in Nature Communications.

01:03
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