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כתבות אחרונות מאתר 'Phys'
Phys

Unusual three-way bestows magnetic sense to single-celled organism‎

How do microorganisms orient themselves to find the optimal habitat? Scientists have thoroughly investigated so-called magnetotactic bacteria, which use the Earth's magnetic field as a biological compass. Some eukaryotic single-celled organisms—that is, more complex organisms like ciliates, which, unlike bacteria, have a cell nucleus—also possess this capability. But how they acquire it has largely remained a puzzle.

02:07
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Phys

One idea, two cosmic mysteries—linking Little Red Dots and globular clusters‎

A new study led by astronomers at The University of Texas at Austin proposes a theory that could solve two astronomical riddles at once: the nature of Little Red Dots and the origin of globular clusters. Rather than representing distinct objects, the study suggests that one may instead be the ancestor of the other: Little Red Dots are, in fact, an early form of globular clusters. The findings are published in The Astrophysical Journal Letters.

01:45
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Phys

Transforming vibrations into clean fuels and chemicals through piezosynthesis‎

From ocean waves and flowing rivers to the systems used to transport and treat water, vibrations are everywhere. But can vibrations do more than just shake water? Can they split water or drive the production of useful chemicals from water? A research team led by Professor Sai Kishore Ravi from the School of Energy and Environment (SEE) at City University of Hong Kong (CityUHK) has successfully demonstrated how mechanical vibrations can be harnessed to drive the production of useful chemicals from water.

01:28
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Phys

New cell imaging method measures protein folding in living organelles‎

Protein aggregates are associated with the development of diseases like Alzheimer's and Parkinson's. These are found more often in certain areas of cells known as membraneless organelles. Do these organelles promote this protein clumping, or do they protect the cell by temporarily absorbing the aggregates? Professor Simon Ebbinghaus and Mailin Becker from Ruhr University Bochum, Germany, set out to answer this question with their new, self-developed method, "confocal Fast Relaxation Imaging," or cFReI. They report their findings in the journal PRX Life.

01:02
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Phys

'Narcissist' bosses are more likely to oppose work from home, studies show. But are they right?‎

Have you ever wondered why your boss wants you back in the office full-time, rather than allowing hybrid work, where you can combine work from home and in an office? A fascinating study just shed fresh light on this topic.

01:02
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Phys

30,000 people tried for bigamy over the past 400 years in England and Wales, archives reveal‎

Bigamy has been a rare crime during the past 400 years—and offenders have been harshly punished. It seems likely that no more than 30,000 individuals have ever been tried for bigamy in England and Wales during this period. Most have been convicted, and possible punishment has ranged from execution, branding, whipping, transportation and imprisonment to fines and community service in more recent decades.

00:41
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Phys

Molecules stop carbon nanotubes clumping, unlocking record heat-to-electricity performance‎

QUT researchers have overcome a challenge that has limited next-generation energy-harvesting materials for more than two decades, opening the door to more powerful wearable electronics and new ways of turning wasted heat into electricity. The breakthrough centers on carbon nanotubes, which are flexible, conductive microscopic rods that have long shown promise for wearable technologies but have been difficult to control.

00:41
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Phys

Carbon nanotube model reveals how smart sensors perform at aircraft-like extremes‎

Researchers from Skoltech, in collaboration with the Harbin Institute of Technology and Jiangsu University (China), have published a study presenting the first empirical model to explain and predict the sensing behavior of hierarchical tri-phase carbon nanotube systems across a wide temperature range (from -170°C (-274°F) to 90°C (194°F)). The study has been published in the Carbon journal.

00:22
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Phys

Early career funding improves scientific influence and citations for women‎

Early-career funding has a bigger impact on women than men when it comes to their careers in science, according to a new study from City St George's, University of London. While the study found that successful applicants in both groups secure more future research funding than unsuccessful applicants, it also found that successful female applicants receive more citations and are cited more often in their field than female applicants who did not receive funding.

00:22
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Phys

Ancestral variation, not new mutations, may impact survival of species facing climate change‎

Research co-authored by an Oklahoma Museum of Natural History curator, her graduate student and an international team of scientists has shed new light on the evolutionary "toolkit" animals use to survive environmental change.

00:02
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