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כתבות אחרונות מאתר 'Phys'
Phys

Ancient marine predator had a built-in float‎

About 240 million years ago, when reptiles ruled the ocean, a small lizard-like predator floated near the bottom of the edges in shallow water, picking off prey with fang-like teeth. A short and flat tail, used for balance, helps identify it as a new species, according to research published in the Journal of Vertebrate Paleontology.

01:09
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Phys

International study uncovers secret surfing life of remoras hitchhiking on blue whales‎

Sticking to the bodies of sharks and other larger marine life is a well-known specialty of remora fishes (Echeneidae) and their super-powered suction disks on their heads. But a new study has now fully documented the "suckerfish" in hitchhiking action below the ocean's surface, uncovering a much more refined skillset that the fish uses for navigating intense hydrodynamics that come with trying to ride aboard a 100-ft. blue whale (Balaenoptera musculus).

00:03
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Phys

Location and extent of coral reefs mapped worldwide using advanced AI‎

Nearly 75% of the world's coral reefs are under threat from global stressors such as climate change and local stressors such as overfishing and coastal development. Those working to understand and protect coral reefs are building the know-how to mitigate the damage but doing so requires first knowing where reefs are located.

23:11
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Phys

Reliable quality-control of graphene and other 2-D materials is routinely possible, researchers say‎

Graphene and other single-atom-thick substances are a category of wonder materials, with researchers the world over investigating their electronic properties for potential applications in technologies as diverse as solar cells, novel semiconductors, sensors, and energy storage.

23:08
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Phys

Dull-colored birds don't see the world like colorful birds do‎

Fall is here, and we see the leaves turning yellow, orange or red thanks to a trick of our vision: our brains categorize colors. Scientists have learned that birds with colorful markings do this too. But what about drab birds that don't rely on color?

23:08
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Phys

New sulfur dioxide conversion method may transform current industrial techniques‎

A single-step, plasma-enhanced catalytic process to convert sulfur dioxide to pure sulfur from tail gas streams may provide a promising, more environmentally-friendly alternative to current multistage thermal, catalytic and absorptive processes, according to scientists at Penn State.

23:08
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Phys

Forecasting elections with a model of infectious diseases‎

Forecasting elections is a high-stakes problem. Politicians and voters alike are often desperate to know the outcome of a close race, but providing them with incomplete or inaccurate predictions can be misleading. And election forecasting is already an innately challenging endeavor—the modeling process is rife with uncertainty, incomplete information, and subjective choices, all of which must be deftly handled. Political pundits and researchers have implemented a number of successful approaches for forecasting election outcomes, with varying degrees of transparency and complexity. However, election forecasts can be difficult to interpret and may leave many questions unanswered after close races unfold.

23:08
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Phys

Physicists circumvent centuries-old theory to cancel magnetic fields‎

A team of scientists including two physicists at the University of Sussex has found a way to circumvent a 178-year old theory which means they can effectively cancel magnetic fields at a distance. They are the first to be able to do so in a way which has practical benefits.

23:08
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Phys

Researchers examine the decline in average body temperature among healthy adults over the past two decades‎

In the nearly two centuries since German physician Carl Wunderlich established 98.6°F (37 C) as the standard "normal" body temperature, it has been used by parents and doctors alike as the measure by which fevers—and often the severity of illness—have been assessed.

21:30
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