The simplified formula was developed to analyze local quantum entanglement in nanoscale materials. News organizations may use or redistribute this image, with proper attribution, as part of news ...

Classically, the second law of thermodynamics implies that our knowledge about a system always decreases. A more flattering interpretation connects entropy with the uncertainty inherent to quantum ...

The number pi (π) appears in the most unlikely places. It can be found in circles, of course—as well as in pendulums, springs and river bends. This everyday number is linked to transcendental ...