2/11/2024 0 Comments Atomic clocks astounding![]() Stay informed about all things NPL via our email communication, Measure Up. And with the current accuracy limits being set by technical issues, rather than fundamental limits, the prospects for even better measurements in the future are extremely promising.” Regardless of the application - whether in redefining the SI second, surveying or fundamental physics - the better the clock comparisons, the greater the impact. 16 February 2022 Atomic clouds stabilized to measure dilation of time Tests of relativity once required accurate clocks separated by thousands of kilometres. “Networks of optical clocks can also be used to explore many other aspects of physics, because their precision allows measurements of the world around us to be obtained at unprecedented resolution.”Įxamples of such investigations include testing Einstein’s theory of relativity at ever more stringent levels and searching for possible changes in the values of physical constants. A high-quality cesium clock will only lose about one second every 1.4 million years. These exquisite instruments use lasers to measure the vibrations of atoms, which oscillate at a constant frequency, like many microscopic pendulums swinging in sync. The BACON Collaboration reports extremely accurate comparisons of three world-leading clocks in Boulder, Colorado, housed at the National Institute of Standards and Technology (NIST) and the JILA research institute.” The accuracy of atomic clocks is astounding. Atomic clocks are the most precise timekeepers in the world. ![]() “The remarkable accuracy of atomic clocks makes them excellent instruments for timekeeping and other precision measurements.
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