Walter Energy, Inc., formerly Walter Industries, Inc., is a producer and exporter of metallurgical coal for the global steel industry and also produces steam coal, coal bed methane gas (natural gas), ...

Plasma physics is the study of a state of matter comprising charged particles. Plasmas are usually created by heating a gas until the electrons become detached from their parent atom or molecule. This ...

Condensed-matter physics is the study of substances in their solid state. This includes the investigation of both crystalline solids in which the atoms are positioned on a repeating three-dimensional ...