Nathaniel Scharping, Discover Magazine, 18 Jan. 2021 The actual creation of such a clock is still a work in progress, and the cesium atom remains today the ultimate time keeper. Claire Thornton, USA TODAY, 5 July 2023 Cesium isn’t the end of the story, either: there are experimental clocks being developed in labs around the world based on laser light, with a much higher frequency than the microwaves used in cesium clocks. 2011 The water Japan plans to release into the sea contains cesium and other radioactive material. Elizabeth Preston, Discover Magazine, 26 Mar. 2014 But the radioactive cesium has a half-life of 30 years. Nick Bullock, Discover Magazine, 30 Oct. 2018 In 1967, the second itself was officially defined as 9.2 billion oscillations of microwave radiation emanating from a system of cesium atoms. 2022 The second today, the one engraved in cesium, is based on a series of observations of the Earth’s orbit by the astronomer Simon Newcomb between 17. Clara Moskowitz, Scientific American, 28 Jan. 2023 Time is defined in terms of cesium atoms, so the best clocks in the world are cesium clocks. Jackie Appel, Popular Mechanics, 10 Aug. Recent Examples on the Web The researchers began by cooling individual cesium atoms down to almost absolute zero and get them all in the same quantum state.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |