Redefining Time.
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| Title: | Redefining Time. |
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| Authors: | BENNETT, JAY (AUTHOR) |
| Source: | Scientific American. Mar2025, Vol. 332 Issue 3, p56-65. 10p. 7 Color Photographs, 7 Diagrams. |
| Subjects: | General relativity (Physics), Atomic clocks, Metric system, Quantum theory, Crystal oscillators |
| Abstract: | The article discusses the advancements in atomic clocks, particularly the transition from cesium clocks to optical clocks that use atoms like strontium or ytterbium. These optical clocks are more accurate than cesium clocks, leading to discussions about redefining the second. The International Bureau of Weights and Standards has set criteria for redefining the second, but some scientists are hesitant due to the lack of immediate benefits. The article also delves into the history of timekeeping, from sundials to atomic clocks, highlighting the evolution of time measurement. [Extracted from the article] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | The article discusses the advancements in atomic clocks, particularly the transition from cesium clocks to optical clocks that use atoms like strontium or ytterbium. These optical clocks are more accurate than cesium clocks, leading to discussions about redefining the second. The International Bureau of Weights and Standards has set criteria for redefining the second, but some scientists are hesitant due to the lack of immediate benefits. The article also delves into the history of timekeeping, from sundials to atomic clocks, highlighting the evolution of time measurement. [Extracted from the article] |
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| ISSN: | 00368733 |
| DOI: | 10.1038/scientificamerican032025-21de9utnaotnpckxhmqqw9 |
