A maser is a accessory that produces articular electromagnetic after-effects through addition by angry emission. Historically, “maser” derives from the original, upper-case acronym MASER, which stands for "Microwave Addition by Angry Discharge of Radiation". The lower-case acceptance arose from abstruse development accepting rendered the aboriginal description imprecise, because abreast masers afford EM after-effects (microwave and radio frequencies) beyond a broader bandage of the electromagnetic spectrum; thus, the physicist Charles H. Townes’s appropriate acceptance of “molecular” replacing “microwave”, for abreast linguistic accuracy.1 In 1957, if the optical articular oscillator was aboriginal developed, it was denominated optical maser, but usually alleged laser (Light Addition by Angry Discharge of Radiation), the acronym Gordon Gould accustomed in 1957.
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