The photoelectric effect, first explained in 1905, transformed our understanding of how light interacts with matter. When ...

Nitrogen is everywhere: even in the air there is four times as much of it as oxygen. ... "Two electrons are typically required for the formation of a single covalent bond.

While researchers have long suspected that this type of nitrogen that lacks two specific electrons -- a nitrene -- was tied to reactivity, the elusive species had yet to be directly spotted.

In something akin to a double-slit experiment, scientists at the Fritz Haber Institute of the Max Planck Society, in co-operation with researchers from the California Institute of Technology in ...