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כתבות אחרונות מאתר 'Phys'
Phys

The public isn't bored with economists, management scholars and sociologists but engaging people has conditions‎

For years, we've been told a familiar story: Social scientists such as economists, management scholars and sociologists talk, and the public shrugs. The claim goes that people don't find our work interesting, that our expertise is fuzzy compared with "hard" sciences, and that journalists and readers will always prefer the crisp authority of practitioners such as CEOs, consultants or politicians. Is that really true?

00:34
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Phys

Tiny magnetic 'flowers' could expand how researchers image spintronic materials under stronger fields‎

Materials with magnetic nanostructures have a wide range of potential applications. One area is so-called spintronics, with devices that encode information in magnetic domains. These magnetic bits can be written, read and erased in a more energy-efficient way than bits in current semiconductor devices. Spin textures and magnetic domains in such materials can be investigated using nanoscale magnetic imaging techniques. For example, photoemission electron microscopy (PEEM), coupled with a magnetically sensitive detection mechanism.

00:07
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Phys

How simple changes to PowerPoint presentations can make a big difference for learners‎

Microsoft PowerPoint has become the default tool for presenting learning materials in classrooms, universities, corporate training programs, webinars and remote learning environments. But is it being used effectively? This question arises because learners face a major challenge. They try to listen to the speaker's explanations while simultaneously connecting them to the relevant visual elements on the slide, which can interfere with learning.

23:02
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Phys

New imaging method offers fresh insight into LED materials‎

Light Emitting Diodes (LEDs) are used in everything from household lighting and mobile phones to large display screens. Improving their efficiency could reduce energy use and enhance performance across a wide range of technologies. A new study involving researchers from the University of Liverpool and the University of Strathclyde has demonstrated a powerful way to identify tiny crystal defects that can reduce the efficiency of LED materials. The advance could help scientists better understand how these defects form and ultimately support the development of more efficient electronic and optoelectronic devices.

23:02
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Phys

Textbook chemistry gains blue-light upgrade to build complex drug molecules in fewer steps‎

In drug discovery, building complex molecules quickly is the name of the game.

22:14
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Phys

Climate change leaves northern tree swallows more vulnerable those in the southern US‎

Tree swallows in the northern U.S. and Canada face the greatest risk from climate change despite responding to temperature the same way as tree swallows in the southern U.S., according to a new study led by Cornell researchers that analyzed nearly 95,000 nests across five decades. The findings, published in Proceedings of the National Academy of Sciences, reveal a critical timing squeeze for tree swallows in the northern half of the United States and Canada, putting them at risk.

22:14
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Phys

We assessed dozens of programs for men who use violence. Here's what we learned‎

Domestic and family violence is an epidemic. In 2024, the prime minister declared it a national crisis. Official statistics show time and again that this violence is overwhelmingly perpetrated by men. This is unlikely to be news to most of us—we see it play out in our communities, online and on our screens.

21:35
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Phys

Autonomous drones measure volcanic gas clouds, offering clearer eruption warning signs‎

To better assess the danger posed by volcanoes, researchers at the Technical University of Munich (TUM) have developed a new measurement system. Laser beams are sent through escaping gas clouds and reflected by drones. An algorithm uses the reflected signals to generate a map showing gas concentrations, including elevated carbon dioxide levels. The ratio of carbon dioxide to sulfur dioxide is an important indicator of impending eruptions.

21:17
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Phys

Neil the seal is more than a viral animal. He's become a global folk hero‎

I am one of Hobart's many residents who traveled to a nearby beach to witness Neil the seal—an animal that has been receiving global attention for his wild personality and humorous antics.

20:28
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Phys

Scientists decipher how a psychedelic substance is created, then engineer a plant to produce several at once‎

Long before scientists began studying them in the lab, mind-altering substances were already being gathered from plants, fungi and even animals for use in rituals, healing practices and mental health treatment. Researchers at the Weizmann Institute of Science have now managed to bring together in a single organism five psychedelic substances that in nature are scattered across the tree of life.

20:28
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