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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.
Atomic Master Clock & Titanium Wristwatch 2018 Wrist 2.900 3.456 12/10/2019 New York Phillips [107] Patek Philippe Pink Gold Ref. 1518 1958 Wrist 2.900 3.02 25/04/2022 Hong Kong Sotheby's [108] 63 Patek Philippe Emperor Haile Selassie Ref. 2497 1954 Wrist 2.898 3.602 05/15/2017 Geneva Christie's [109] [110] 64 Patek Philippe
Some manufacturers may label radio clocks as atomic clocks, [141] because the radio signals they receive originate from atomic clocks. Normal low-cost consumer-grade receivers that rely on the amplitude-modulated time signals have a practical accuracy uncertainty of ± 0.1 second.
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The first Atmos clock was designed by Jean-Léon Reutter, an engineer in Neuchâtel, Switzerland, in 1928. [5] [6] [7] This noncommercial prototype, which predated the Atmos name but is now known unofficially as Atmos 0, was driven by a mercury-in-glass expansion device. The mechanism operated on temperature changes alone.
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.
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