Why does plastic turn brittle and paint fade when exposed to the sun for long periods? Scientists have long known that such ...

Speed matters. When an X-ray photon excites an atom or ion, making a core electron jump onto a higher energy level, a ...

Ionization and coupling are two different sub-disciplines in the field of mass spectrometry. Ambient ionization allows direct, high-throughput, surface study of native samples. And for the study of a ...