Frank Close tells us about the history of particle physics, and what it means that charge in our universe's matter is so ...

Which one has a positive charge, a negative charge, and no charge? Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite.

Most atoms are made from positively charged protons, neutral neutrons and negatively charged electrons. Positronium is an exotic atom composed of a single negative electron and a positively ...

Electron affinity, defined as the energy released when an electron attaches to a neutral atom, is a fundamental parameter in understanding atomic reactivity and material properties. Negative ion ...

Electron microscopes and modern computer image processing allowed University of Tokyo researchers to uncover the correct structure of a protein essential in the immune system, IgM, and a much ...