MI weekly selection #582

Ben Yuen and Angela Demetriadou (2024) doi: 10.1103/PhysRevLett.133.203604

Breakthrough reveals single photon shape for first time

In a groundbreaking study, scientists have visualized the shape of a single photon for the first time, a development that could transform material science and quantum physics. “The geometry and optical properties of the environment have profound consequences for how photons are emitted, including defining the photons’ shape, color, and even how likely it is to exist,” said Angela Demetriadou, co-author of the study.

Full Story: Earth

Great apes share cognitive skills with humans

A study reveals that great apes such as gorillas, chimpanzees and orangutans can distinguish between agents and patients in events, a cognitive ability previously thought unique to humans. While apes communicate in human-like ways, the study raises questions about why they haven’t developed complex language, suggesting that social cognition and brain size might play roles in language evolution.

Full Story: Popular Science

Low-toxicity blue lasers

Researchers have introduced a breakthrough in blue laser technology by utilizing low-toxicity ZnSe-ZnS core-shell quantum dots. These lasers promise improved efficiency and reduced environmental impact compared to cadmium-based alternatives.

Full Story: PhysOrg

Mobula rays offer blueprint for advanced water filtration

Researchers have discovered that mobula rays use a specialized filter-feeding mechanism that could inspire advancements in industrial water filtration. The rays utilize comb-like plates to filter plankton while maintaining adequate water flow for breathing, which inspired a new filter design that balances permeability and selectivity.

Full Story: Earth

Significant drop in Earth’s freshwater witnessed

An international team using NASA’s GRACE satellites has observed a dramatic reduction in Earth’s freshwater levels over the past decade. The data shows that since 2014, freshwater has decreased significantly, correlating with major droughts and rising global temperatures. Researchers warn that this trend could signal a prolonged dry phase.

Full Story: Space

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