 |
Louis EssenEnglish experimental physicist, creator of quartz and atomic clocks
Date of Birth: 06.09.1908
Country:  Great Britain |
Content:
- Lewis Essen: Pioneer of Quartz and Atomic Clocks
- Education and Early Career
- Quantum Metrology and Microwave Spectroscopy
- Quartz and Atomic Clocks
- Recognition and Honors
- Membership in the Royal Society
- Legacy
Lewis Essen: Pioneer of Quartz and Atomic Clocks
Born on September 6, 1908, in Nottingham, England, Lewis Essen was a brilliant experimental physicist renowned for his pioneering work in quartz and atomic clocks.
Education and Early Career
Essen completed his studies at the University of London in 1928. In 1929, he joined the National Physical Laboratory (NPL) in Teddington.
Quantum Metrology and Microwave Spectroscopy
Essen's research interests spanned quantum metrology and microwave radiospectroscopy, with a particular focus on time and frequency standards, radio frequency measurements, and the speed of light.
Quartz and Atomic Clocks
Essen's groundbreaking achievements include the invention of quartz clocks and atomic clocks. In 1955, he created the first atomic frequency (time) standard based on a beam of cesium atoms. This breakthrough enabled the comparison of atomic frequencies with the astronomical unit of time. In 1958, his work led to the establishment of a time service based on the atomic frequency standard.
Recognition and Honors
Essen's contributions to atomic frequency standards and their practical applications were widely recognized. He received the C. Boyce Prize in 1957. In 1959, the Academy of Sciences of the USSR awarded him the A.S. Popov Gold Medal.
Membership in the Royal Society
In 1960, Essen was elected a Fellow of the Royal Society.Quantum Rings
Essen also developed quantum rings (Essen rings) while exploring quantum frequency standards. These rings are extensively used in contemporary frequency standards.
Legacy
Lewis Essen passed away on August 24, 1997, leaving behind an enduring legacy in the field of timekeeping. His pioneering work on quartz and atomic clocks revolutionized accurate time measurement, with lasting implications for science, technology, navigation, and daily life.
