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כתבות אחרונות מאתר 'Phys'
Phys

Soccer ticket crackdowns and price hikes are excluding traditional fans‎

The new season of the English Premier League is almost ready to kick off, and with it comes another annual cycle of the national game. Each August brings hope and expectation for supporters, with an opportunity to start anew. But rather than excited anticipation, frustration, anger and anxiety are the overriding emotions of many fans.

02:50
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Phys

Hydrogel platform uses vitamin B2 and blue light to simplify living tissue models‎

Researchers at Tampere University have developed a versatile hydrogel platform that makes it easier to create customized biomaterials for tissue engineering, disease modeling, drug discovery and regenerative medicine. Their plug-and-play crosslinking technology enables the design of a wide range of hydrogels in which biological molecules, such as proteins, peptides and nucleic acids, can be incorporated under gentle, cell-friendly conditions. The paper is published in the journal Cell Reports Physical Science.

00:49
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Phys

Climate change could triple the price of wheat‎

Bread, pasta and breakfast cereals may seem far removed from dry fields in North America, Europe or Asia. Yet when water shortages hit several of the world's most important wheat-growing regions simultaneously, the consequences can be felt all the way to supermarket shelves and bakery aisles.

00:21
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Phys

Your high school friends may shape whether you become an entrepreneur decades later‎

With more young Canadians considering self-employment amid a high youth unemployment rate, entrepreneurship programs are facing growing demand. Applications to Futurpreneur, the national organization that finances young Canadian entrepreneurs, rose 50% last quarter, compared with 15% growth a year earlier.

00:02
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Phys

Complex odors prove easier to map than expected with machine learning‎

If you want to describe a particular color, you could look to the Pantone color wheel to find its exact hue, saturation and brightness, and how it compares with other colors. But nothing like that has existed for complex odors.

00:02
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Phys

Laser-cut aluminum foil could replace costly terahertz polarizers‎

When physicists at the ARC Centre for Transformative Meta-Optical Systems (TMOS) needed a key component for their terahertz experiments, they ran into a frustrating problem—they needed tiny optical devices, known as wire-grid polarizers, but these cost thousands of dollars each.

23:50
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Phys

Scientists map hair follicle formation in spacetime, advancing understanding of how organs develop‎

In a new research report, scientists at Johns Hopkins Medicine say they have developed a technology that allows them to capture a 3D molecular "snapshot" of hundreds of hair follicles as they develop and then reconstruct the fourth dimension—time—to create a stop-motion animation of how this organ forms. The research was published in the journal Cell.

23:22
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Phys

Inside the race to prepare cities for extreme heat‎

A sea of corrugated metal roofs stretches into the distance across an informal settlement in Makassar, Indonesia.

23:14
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Phys

Iron hydride enters an exotic state of matter under Earth's inner-core conditions‎

Earth's inner core, composed primarily of iron with a small percentage of light elements, may enter a superionic state at extreme pressure and temperature, according to experimental results from researchers at Science Tokyo. Using laser-heated and electrically wired diamond-anvil cells, the researchers identified experimental signatures of superionic iron hydride at conditions relevant to Earth's core. These findings provide new insights into the composition and dynamics of Earth's deep interior.

23:14
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Phys

New Monte Carlo method accelerates simulations of densely entangled polymer melts‎

Long polymer chains are everywhere: in synthetic materials, soft matter, biological systems such as chromosomes, and mathematical models of filaments and knots. When many such chains are densely packed, they form what physicists call a polymer melt. In this crowded environment, each chain is constrained by the others around it. These entanglements are central to the behavior of polymeric materials, but they also make the systems extremely difficult to simulate. As chain length increases, the time needed to obtain a new independent configuration grows very rapidly. For very large systems, conventional simulations can therefore become computationally prohibitive.

22:45
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