Which of the following timepieces

What is horology and how does it work, what does it do and why is it used?do not know i think its too do with time You're right.
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2. asked by jade
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Which of the following timepieces is a luxury mechanical watch, known for its iconic design and often associated with a tennis
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Atomic clocks utilize the metal cesium to keep time. Cesium is a highly reactive metal that is also used in television cameras
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