From Sundials to Atomic Clocks: Understanding Time and FrequencyThis clear and accessible introduction to the concept of time examines forms of measurement, historic timekeeping methods, uses of time information, and the role of time in science and technology. It includes a fascinating survey of man-made clocks and watches, and more than 300 illustrations enliven its comprehensive treatment. |
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accuracy accurate answer approach atomic clocks atoms balls beam better broadcast build called century cesium Chapter clock communication consider container continually correct count curve depends determine device direction discussed distance Earth effect electric electrons energy entropy example fact first frequency future gravitational hand hour important interval keep kind later laws length less light matter means measure mechanics meters million minutes motion moving nature navigation observations operation oscillator particles particular pendulum period position possible precise predict present problem produce quantum mechanics question radio range receiver Relativity resonant frequency resonator result satellite scale scientists shows signal simply space speed standard star stations step suppose swings synchronized theory tion turn understanding units universe watch waves