[PAR] [TLE] Maser [SEP] A maser ( , an acronym for "microwave amplification by stimulated emission of radiation") is a device that produces coherent electromagnetic waves through amplification by stimulated emission.  The first maser was built by Charles H. Townes, James P. Gordon, and H. J. Zeiger at Columbia University in 1953.  Townes, Nikolay Basov and Alexander Prokhorov were awarded the 1964 Nobel Prize in Physics for theoretical work leading to the maser.  Masers are used as the timekeeping device in atomic clocks, and as extremely low-noise microwave amplifiers in radio telescopes and deep space spacecraft communication ground stations. [PAR] [TLE] Charles H. Townes [SEP] Charles Hard Townes (July 28, 1915 – January 27, 2015) was an American physicist and inventor of the maser and laser.  Townes worked on the theory and application of the maser, for which he obtained the fundamental patent, and other work in quantum electronics associated with both maser and laser devices.  He shared the Nobel Prize in Physics during 1964 with Nikolay Basov and Alexander Prokhorov.  Charles was an advisor to the United States Government, meeting every US President from Harry Truman (1945) to Bill Clinton (1999).
[PAR] [TLE] Maser [ SEP ] A maser ( , an acronym for " microwave amplification by stimulated emission of radiation " ) is a device that produces coherent electromagnetic waves through amplification by stimulated emission . The first maser was built by Charles H. Townes , James P. Gordon , and H. J. Zeiger at Columbia University in 1953 . Townes , Nikolay Basov and Alexander Prokhorov were awarded the 1964 Nobel Prize in Physics for theoretical work leading to the maser . Masers are used as the timekeeping device in atomic clocks , and as extremely low - noise microwave amplifiers in radio telescopes and deep space spacecraft communication ground stations . [PAR] [TLE] Charles H. Townes [ SEP ] Charles Hard Townes ( July 28 , 1915 – January 27 , 2015 ) was an American physicist and inventor of the maser and laser . Townes worked on the theory and application of the maser , for which he obtained the fundamental patent , and other work in quantum electronics associated with both maser and laser devices . He shared the Nobel Prize in Physics during 1964 with Nikolay Basov and Alexander Prokhorov . Charles was an advisor to the United States Government , meeting every US President from Harry Truman ( 1945 ) to Bill Clinton ( 1999 ) .
Maser was first built by the physiciat who shared the Nobel Prize in 1964 with which two other people?
Maser was first built by the physiciat who shared the Nobel Prize in 1964 with which two other people ?
Nikolay Basov and Alexander Prokhorov
Nikolay Basov and Alexander Prokhorov