One of the most spectacular discoveries of molecular astronomy has been the detection of maser emission. The same radiation that is generated in the laboratory

Astrophysical masers, naturally occurring microwave and radio-wave emissions, provide an important tool to investigate astrophysical environments. Several thous

Masers and Lasers: An Historical Approach examines the progress of research and practical use of lasers chronologically, covering the fundamental science in det

Written for postgraduates and researchers, this is an up-to-date survey of astrophysical maser sources and their use as astronomical tools.