An atom is the smallest unit of an element that retains its chemical properties. It is made of protons, neutrons, and electrons. (Image: M ...

The lifetime of an atom can be extended up to ten times by placing it in front of a short circuit that acts as a mirror. The artificial atom consists of a superconducting circuit on a silicon chip.

The Muonium Atom This recently discovered atom consists of only two elementary particles: a positive muon and an electron. A study of its energy levels has yielded precise new information that ...