Diamonds engage both optical microscopy and MRI for better imaging

When doctors or scientists want to peer into living tissue, there's always a trade-off between how deep they can probe and how clear a picture they can get. With light microscopes, researchers can see submicron-resolution structures inside cells or tissue, but only as deep as the millimeter or so that...

Spontaneous superconducting currents in strontium ruthenate

Superconductivity is a complete loss of electrical resistance. Superconductors are not merely very good metals: they represent a fundamentally different electronic state. In normal metals, electrons move individually, and they collide with defects and vibrations in the lattice. In superconductors, electrons are bound together by an attractive force, which allows...

US safety agency cites ‘metal fatigue’ in Boeing 777 incident

A key US safety regulator said Friday initial investigations confirm metal fatigue was a factor in last month's scare when a Boeing 777 engine caught fire and rained debris on houses below. But the National Transportation Safety Board (NTSB) said it has not reached a final conclusion on the causes...

Study shows masks, ventilation stop COVID spread better than social distancing

A new study from the University of Central Florida suggests that masks and a good ventilation system are more important than social distancing for reducing the airborne spread of COVID-19 in classrooms. The research, published recently in the journal Physics of Fluids, comes at a critical time when schools and...