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כתבות אחרונות מאתר 'Phys'
Phys

A new route to calculating gluon production in proton–nucleus collisions‎

In the theoretical study of proton-nucleus collisions, the colliding projectiles can be described as streams of color charges moving along their respective trajectories. These color charges couple to gluons, which then produce the particles that are observed in the final state (gluons and quarks, which eventually produce hadrons).

03:38
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Phys

Earth atmosphere emulators could enable faster and more accurate weather predictions‎

If you partitioned the entire Earth, from just below the surface to the top of the atmosphere, into 1-kilometer-square chunks, there would be billions of them. Now run each of those cells through a series of complex physics equations, and you can see how the entire Earth system interacts and evolves in detail, one step at a time.

03:38
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Phys

European orbiter detects fresh hints of volcanic activity on Mars‎

New evidence from gas seeping above volcanic rifts suggests Mars is not geologically dead deep inside, but merely sleeping. Fresh fissures along the Alba Mons region hint at active spots under the surface, where gases from inside the planet may be making their way up to the surface.

03:38
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Phys

How ranchers on Brazil's 'Dirty List' bypass forced labor safeguards by selling cattle through intermediaries‎

Brazil's "Dirty List," a public registry that names employers found to have violated anti-slavery laws, is a key component of the country's efforts to combat forced labor. Major meatpackers in Brazil signed sustainable sourcing commitments promising to not purchase cattle directly from ranchers on the Dirty List. But new research shows that ranchers have found ways around these restrictions, rerouting cattle through intermediaries and allowing cattle linked to forced labor to remain in domestic and international beef and leather supply chains.

03:38
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Phys

First direct observations reveal hydrogen dissolved in tiny gaps between metal atoms‎

University of Sydney researchers have made a breakthrough by directly observing hydrogen in the tiny spaces between the atoms in metal alloys. The world-first observation of hydrogen dissolving in these 'metal crystal lattices' offers fresh insights into why hydrogen can weaken metals and how more hydrogen-resistant materials might be developed.

03:38
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Phys

Scientists reveal how cosignaling receptors dually regulate T cell activation via phase separation‎

Previous studies have shown that upon antigen stimulation, the T cell receptor (TCR) undergoes phase separation with the kinase Lck to mediate rapid T cell activation. However, the manner in which costimulating receptors regulate this process has remained unclear.

03:38
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Phys

Ancient coins suggest influential Iron Age king was female‎

Bournemouth University (BU) archaeological research has revealed that Iron Age British ruler "Verica," who was central to the Roman invasion of Britain in A.D. 43, was in fact a woman. This discovery rewrites the history of early Roman Britain.

02:20
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Phys

When customers cross the line: Study reveals hidden toll of harassment on gig workers‎

A rideshare driver picks up a passenger who makes repeated unwanted sexual comments. The ride ends, but the experience doesn't.

02:20
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Phys

Using ChatGPT at work? Your boss may trust you less, new study finds‎

Artificial intelligence may be making employees faster and more productive, but it could also be quietly damaging their careers. A new study led by Samuel Meyers, a Ph.D. student, together with his adviser Dr. Yochanan Bigman of the Hebrew University of Jerusalem and Dr. Roman Briker of WHU—Otto Beisheim School of Management in Germany, suggests that workers who use ChatGPT and other AI tools may pay an unexpected professional price: their managers are less likely to trust them.

02:20
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Phys

Entrepreneurs who struggle to understand their emotions are less committed to their business goals, study finds‎

Entrepreneurs who struggle to recognize and make sense of their own emotions are less likely to feel attached to their businesses and less committed to achieving their goals, particularly in high-stress periods, according to new research from the University of Bath School of Management.

02:20
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