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2. Atomic clock - Wikipedia

   en.wikipedia.org/wiki/Atomic_clock

   Atomic clocks are installed at sites of time signal radio transmitters. [103] They are used at some long-wave and medium-wave broadcasting stations to deliver a very precise carrier frequency. [104] Atomic clocks are used in many scientific disciplines, such as for long-baseline interferometry in radio astronomy. [105]

3. Chip-scale atomic clock - Wikipedia

   en.wikipedia.org/wiki/Chip-scale_atomic_clock

   Commercial manufacturing of these atomic clocks began in 2011. [4] The CSAC, the world's smallest atomic clock, is 4 x 3.5 x 1 cm (1.5 x 1.4 x 0.4 inches) in size, weighs 35 grams, consumes only 115 mW of power, and can keep time to within 100 microseconds per day after several years of operation.

4. List of atomic clocks - Wikipedia

   en.wikipedia.org/wiki/List_of_atomic_clocks

   This page was last edited on 6 December 2024, at 01:21 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

5. Atmos clock - Wikipedia

   en.wikipedia.org/wiki/Atmos_clock

   The first clock powered by changes in atmospheric pressure and temperature was invented by Cornelis Drebbel in the early 17th century. Drebbel built as many as 18 of these, the two most notable being for King James VI & I of Britain, and Rudolf II of Bohemia. The King James clock was known as the Eltham Perpetuum, and was famous throughout Europe.

6. 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 ]

7. The best sunrise alarm clocks of 2025 - AOL

   www.aol.com/lifestyle/best-sunrise-alarm-clocks...

   Best battery-powered sunrise alarm clock Lexon Mina Sunrise Alarm Clock. $80 at Amazon. Lumie Bodyclock Glow 150. More options. ... Patagonia's Presidents' Day sale just dropped, with prices up to ...