= James Power Gordon
{c}
{tag=Physicist}
= James P. Gordon
{c}
{synonym}
= J. P. Gordon
{c}
{synonym}
A <physicist> who coauthored the ammonia <maser> work with <Herbert Jack Zeiger> and <Charles Hard Townes>. An excited molecular beam transfers energy to a microwave cavity by <stimulated emission>. The same controlled transition can act as an oscillator, amplifier or spectroscopic reference, showing why a new radiation source could also become a precision measurement tool.<The Maser—New Type of Microwave Amplifier, Frequency Standard, and Spectrometer by James Power Gordon and others>[Original maser paper: beam selection, microwave cavity and applications]{ref}
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