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כתבות אחרונות מאתר 'Phys'
Phys

Advice around children's screen use can be overwhelming. There is no single 'right' approach‎

When should your child start engaging with screens? How long should they use them for? Can they watch or play alone? Should there be a gap before bed?

21:03
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Phys

Many data centers are located where water resources are limited‎

One-quarter of the world's data centers are located in areas where water demand exceeds supply for at least one month each year, according to a new global analysis. Researchers reporting in Environmental Science & Technology mapped data center locations against available water resources and found that, under a future climate scenario, the proportion of facilities in water-stressed areas could rise to one-third.

21:03
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Phys

Beyond the screen: E-health literacy steers young adults to professional health care‎

Better electronic health (e-health) literacy encourages young adult patients to visit doctors' offices rather than replace professional consultations with self-treatment.

20:42
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Phys

Normally forbidden emissions from graphene could expose quantum fluctuations in incoming light‎

Voltage fluctuations, light fluctuations, temperature fluctuations—any fluctuations are troublesome and thus undesirable. They don't just cause discomfort; in engineering and medical applications, they affect the accuracy of measurements or introduce errors in controls. Even at the minute level of quantum phenomena, fluctuations are considered undesirable.

20:42
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Phys

Earth's core may have been leaking hydrogen for billions of years‎

When Earth formed billions of years ago, its metallic core was wrapped in a global ocean of molten rock, which eventually cooled and crystallized to form the mantle. Today, when deep-rooted mantle plumes rise toward the surface and produce volcanic eruptions, the resulting lava can contain hydrogen from deep inside the planet.

20:31
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Phys

Euclid discovers its first new comet 810 million miles from Earth‎

The European Space Agency's Euclid space telescope has discovered its first previously unknown comet in images taken between Sept. 16 and 24, 2026.

20:23
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Phys

Scientists redetermine a key strontium frequency with 50 times better precision for quantum technologies‎

The Korea Research Institute of Standards and Science (KRISS) has remeasured a key transition frequency of the strontium (Sr) atom for the first time in 88 years, since 1938, using a photonic grating chip. It has established a new absolute frequency value with a measurement uncertainty reduced by more than 50 times. By providing an accurate reference value for next-generation quantum technologies, this achievement is expected to contribute to the precise control and miniaturization of quantum devices, including atomic clocks and neutral-atom quantum computers. The work is published in the journal Metrologia.

20:23
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Phys

How do people quickly recognize what others may be feeling?‎

Communicating effectively with others involves recognizing emotions from faces and voices. How does the brain process and integrate emotional information from what others show and say?

20:04
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Phys

Oldest animals on Earth found to share a common wormlike ancestor‎

New research from the University of St Andrews has shed light on the evolution of an important yet thus far poorly understood group of marine invertebrate animals—brachiopods. The work, published in Science Advances, presents the first comprehensive phylogenomic analysis of all five extant brachiopod orders and related lineages.

20:04
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Phys

Why the ugly history of IQ testing matters for AI and education‎

OpenAI CEO Sam Altman has recently been discussing "artificial general intelligence" that matches or surpasses human capabilities. This is from the same person who has said children born today (including his own) will "never be more intelligent than AI, from a 'raw IQ'" (intelligence quotient) perspective.

19:44
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