Science | WPN World People News

University of Otago physicist Niels Kjærgaard and his team have used extremely precisely controlled laser beams to confine, accelerate and gently collide ultracold atomic clouds of fermionic potassium.
This allowed them to directly observe a key principle of quantum theory, the Pauli Exclusion Principle.
This principle predicts a forbidden zone along a meridian of the spherical halo of scattered particles, which the Otago experiments indeed unveiled.
The dark band in the graphic shows a rule derived from the principle in action. This rule is that indistinguishable fermions cannot scatter out at 90 degrees to the collision axis.

A new University at Buffalo-led study suggests that chlorophyll-based nanoparticles are an effective imaging agent for the gut.

Atomic force microscopy image of a graphene sheet draped over a Bacillus bacterium (left). The bacterium is about 1 micron or 1/25,000 of an inch wide. After applying vacuum and heat treatment, regular wrinkles form in the graphene (right, at twice the magnification).

An image based on a supercomputer simulation of the cosmological environment where primordial gas undergoes the direct collapse to a black hole. The gas flows along filaments of dark matter that form a cosmic web connecting structures in the early universe. The first galaxies formed at the intersection of these dark matter filaments.

Doping-induced tunable wetting of graphene.

While the design certainly elicited some chuckles, Paul Rothemund’s DNA orgami method, introduced 10 years ago, gave researchers a fast and powerful way to shape DNA into useful structures.

This map shows the frequency of carbon dioxide frost's presence at sunrise on Mars, as a percentage of days year-round. Carbon dioxide ice more often covers the ground at night in some mid-latitude regions than in polar regions, where it is generally absent for much of summer and fall.

e.Deorbit closing on target satellite

Transporting netted satellite