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כתבות אחרונות מאתר 'Phys'
Phys

Bell pepper colors reveal differences in sweetness, nutrients and ripeness‎

Raw, grilled, roasted, stuffed—there are many ways to enjoy bell peppers, also called capsicums, sweet peppers or paprika. Bell peppers originated in Central and South America and belong to the nightshade family along with tomatoes and eggplants.

00:15
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Phys

Tests reveal why titanium additions do not fully prevent pitting corrosion in stainless steel‎

Stainless steel is widely used for its corrosion resistance, but it is not invincible. In environments containing chloride ions, such as seawater, pitting corrosion can occur. These pits often start at tiny particles called inclusions embedded in the steel.

00:15
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Phys

Single X-ray pulse reveals plasma nanostructures across scales with one camera‎

Understanding instabilities and turbulence in plasmas is one of the key challenges across a wide range of plasma research fields, including nuclear fusion, astrophysics and laser-plasma physics. In plasmas, slight disturbances can grow due to instabilities, and energy is transferred between structures of various sizes due to turbulence. These phenomena give rise to structures ranging from very small to large, which significantly influence the overall motion and energy flow of the plasma.

22:13
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Phys

How flare ribbons reveal hidden solar explosions on the sun‎

Many topics in astronomy and astrophysics are esoteric. There's not much of a relationship between something like the supermassive black hole at the center of the Milky Way and the life of a regular person going about their business. But the sun is different. Its presence in our lives is inescapable. Its behavior, especially its flaring, has an impact.

21:12
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Phys

'One-positron cyclotron' could test a key prediction of the Standard Model‎

The positron is the antimatter counterpart of the electron, identical in mass but carrying an equal and opposite electric charge. Like the electron, it also behaves like a tiny bar magnet, and according to a key prediction of the Standard Model of particle physics, its magnetic moment should be exactly equal and opposite to the electron's.

20:42
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Phys

Newly identified protein pathway helps HIV stay hidden despite treatment‎

Current HIV medicines are effective at suppressing the virus in the blood. However, HIV can remain "asleep" or dormant inside certain immune cells and in the brain. These hidden pockets of virus, called HIV reservoirs, are the main reason HIV cannot be cured with today's treatments.

19:18
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Phys

Nanoscale alloy redesign tackles cold brittleness for potential deep-space and deep-sea applications‎

Metallic materials used in extremely cold environments must maintain high strength, ductility and fracture toughness to support applications in aerospace, clean energy, superconducting systems and deep-space exploration. However, traditional alloys often suffer performance degradation at ultralow temperatures because of the long-standing trade-off between strength, ductility and toughness. Although metals may become stronger at lower temperatures, they can also become more brittle and prone to fracture.

18:01
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Phys

Seabird family tree predicts which species accumulate plastic better than diet, global analysis finds‎

What seabirds eat might seem like a good starting point for identifying species that tend to accumulate plastic in their digestive systems. Yet a recent global analysis suggests that mapping the evolutionary relatives of birds could offer better clues than their diets or feeding methods alone.

17:15
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Phys

Ancient stalagmites reveal exceptions to Asia–South America monsoon seesaw over the past 450,000 years‎

In places like South Asia, Africa and parts of the Americas, monsoon rains supply water for drinking, crops and hydropower for billions of people. Understanding the patterns that monsoons tend to follow can help people plan for drought risks affecting agriculture, reservoirs and hydropower across distant regions.

16:15
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Phys

Cleaner brick kilns cut pollution, but gains did not reach workers, research finds‎

Relatively simple changes to the way traditional brick kilns operate in Bangladesh can reduce pollution, save fuel and improve the quality of bricks they produce.

15:07
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