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כתבות אחרונות מאתר 'Phys'
Phys

This oddball reflective lava world is challenging to understand‎

Among Kepler and TESS's many surprising exoplanet discoveries are the ultra-short-period (USP) planets. These planets move very quickly and complete an orbit in less than 24 hours. Ancient astronomers thought that Mercury was so fast—it goes around the sun every 88 days—that they named it after the Roman god Mercury, who was the fast-traveling messenger of the gods. They couldn't have known how sluggish Mercury is compared to the USPs.

02:53
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Phys

Looking for bats after dark can help science—and change how we see them‎

What's that chirping sound coming through the detector? Did you feel something whiz past? Those are just some ways people react when they encounter microbats for the first time. Microbats are small, mostly nocturnal mammals that use ultrasonic sounds to navigate and hunt at night. They do this through echolocation, producing calls and listening to the echoes that bounce back from objects and prey.

01:22
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Phys

Giant virus yields potassium channel gene that illuminates complex protein evolution‎

Researchers have discovered a gene for a tandem potassium channel in an algal virus. The finding supports the view that giant viruses may have contributed significantly to the evolution of complex proteins. The study is published in the journal Proceedings of the National Academy of Sciences.

23:51
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Phys

Why do people prefer human empathy despite rating AI empathy higher?‎

More people are turning to artificial intelligence (AI)-powered chatbots for companionship and to address loneliness. But can AI-generated empathy replace human connection?

23:51
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Phys

Chemists develop AI tool to convert human ingenuity into life-enhancing enzymes‎

Many have voiced concerns that artificial intelligence will take jobs away from humans. But assistant professor of chemistry Zhongyue (John) Yang, along with his former doctoral student Qianzhen Shao (now a postdoc at Stanford) and other team members, has created an AI tool that aims to elevate the work that scientists do—not replace them.

22:20
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Phys

Calling species 'invasive'—and culling them—isn't done lightly. But it matters to Australia's threatened species‎

It may sound abstract, but distinctions between "native," "introduced" or "invasive" species can often be life or death. Species considered invasive in Australia—such as European rabbits and feral pigs—are often culled, while most native animals are generally left alone.

20:49
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Phys

Ultracold atoms simulate hard-to-observe matter-antimatter pair production‎

According to quantum electrodynamics, the theory describing interactions between light and electrically charged particles, a sufficiently strong electric field can, in principle, convert some of its energy into particles and their antimatter partners. A particle's antimatter partner has the same mass and, for electrically charged particles, the opposite electric charge.

19:18
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Phys

Four superconducting cables link two large quantum processors into one‎

As quantum computers grow more ambitious, many researchers believe the best way forward is to build them in multiple interconnected parts. In these modular designs, separate quantum processors are linked so they can work together as one larger machine. For this to happen, however, connections must carry fragile quantum information without destroying it.

19:18
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