Active matter theory explains fire-ant group behavior

Ants are social insects and the Solenopsis invicta species—known as the fire ant—is no exception. The social interactions of this invasive insect, which comes from South America, are framed within the context of the theory ...

Researcher posits that electrons do spin, thanks to their fields

Deep inside all matter in the universe, electrons are buzzing around and behaving as if they are twirling around on their axes like spinning tops. These "spinning" electrons are fundamental to quantum physics and play a central ...

Data reveal a surprising preference in particle spin alignment

Given the choice of three different "spin" orientations, certain particles emerging from collisions at the Relativistic Heavy Ion Collider (RHIC), an atom smasher at the U.S. Department of Energy's (DOE) Brookhaven National ...

Emergent behavior observed in self-interacting light

Particles of light—photons—that are forced to interact with each other through specially structured glass demonstrate behavior evocative of the "fractional quantum Hall effect," a phenomenon that garnered the 1998 Nobel ...

The world in grains of interstellar dust

Understanding how dust grains form in interstellar gas could offer significant insights to astronomers and help materials scientists develop useful nanoparticles.

Exploring the air we breathe

Melbourne Pollen—a service at the University of Melbourne's School of BioSciences that forecasts the level of grass pollen and several other types of pollen in the air—has been looking at what's in Melbourne's air for ...

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