the second determined using fixed numerical value cesium frequency |
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| navigate by keyword : wheel wavelength watches value unit two transition time text table study second screenshot school relative ray radioactivity radiation presentation physics physical periodic pendulum particles organ numerical number multimedia minute methods mechanical matter mathematically mathematical logo line levels level learning laboratory kinetics hyperfine hour frequency force font fixed fields eye energy element educational education drawing document diagram determined day data clocks clock circle chemistry chemical cesium cartoon caesium brand |
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| illustration of physics and chemistry, The second is determined using a fixed numerical value of the cesium frequency, the transition between two levels of the cesium 133 atom, radiation chemistry |
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