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2. Atmos clock - Wikipedia

   en.wikipedia.org/wiki/Atmos_clock

   Atmos clock. Jaeger-LeCoultre's Atmos clock on display. Atmos is the brand name of a mechanical torsion pendulum clock manufactured by Jaeger-LeCoultre in Switzerland which does not need to be wound manually. It gets the energy it needs to run from temperature and atmospheric pressure changes in the environment, and can run for years without ...

3. Chip-scale atomic clock - Wikipedia

   en.wikipedia.org/wiki/Chip-scale_atomic_clock

   A chip scale atomic clock (CSAC) is a compact, low-power atomic clock fabricated using techniques of microelectromechanical systems (MEMS) and incorporating a low-power semiconductor laser as the light source. The first CSAC physics package was demonstrated at the National Institute of Standards and Technology (NIST) in 2003, [1] based on an ...

4. Quartz clock - Wikipedia

   en.wikipedia.org/wiki/Quartz_clock

   Standard-quality 32 768 Hz resonators of this type are warranted to have a long-term accuracy of about six parts per million (0.0006%) at 31 °C (87.8 °F): that is, a typical quartz clock or wristwatch will gain or lose 15 seconds per 30 days (within a normal temperature range of 5 to 35 °C or 41 to 95 °F) or less than a half second clock ...

5. Physics breakthrough brings nuclear clock closer to reality - AOL

   www.aol.com/physics-breakthrough-brings-nuclear...

   Atomic clocks’ accuracy and stability have already given scientists important tools for studying earthquakes, gravitational fields and space-time. These fields could experience “a major boost ...

6. Atomic clock - Wikipedia

   en.wikipedia.org/wiki/Atomic_clock

   Atomic clocks are installed at sites of time signal radio transmitters. [170] They are used at some long-wave and medium-wave broadcasting stations to deliver a very precise carrier frequency. [171] Atomic clocks are used in many scientific disciplines, such as for long-baseline interferometry in radio astronomy. [172]

7. Quantum logic clock - Wikipedia

   en.wikipedia.org/wiki/Quantum_logic_clock

   A quantum clock is a type of atomic clock with laser cooled single ions confined together in an electromagnetic ion trap. Developed in 2010 by physicists at the U.S. National Institute of Standards and Technology, the clock was 37 times more precise than the then-existing international standard. [1] The quantum logic clock is based on an ...