How do scientists measure a second? 🕒 Watch this video to learn more about our new atomic clock, NIST-F4, and how we measure time. | National Institute of Standards and Technology (NIST)
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How do people around the world keep time together? They use atomic clocks. These remarkable devices tap into frequencies hidden in the hearts of atoms to produce astoundingly stable, accurate ticks of time – far better than any other kind of clock. This animation explains why we use atoms to keep time and how they keep us all on the beat. | National Institute of Standards and Technology (NIST)
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NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock
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Do you have a moment to talk about what time is and why we measure it? Learn more at https://www.nist.gov/topics/time-frequency. | National Institute of Standards and Technology (NIST)
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This Ridiculously Accurate Clock is the New U.S. Time Standard
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NIST-F4 isn’t just a clock — it’s the culmination of decades of scientific ingenuity, engineering breakthroughs, and an unwavering pursuit of precision. In this video, we explore the creation of NIST-F4, the United States’ latest primary frequency standard, and how it redefines what it means to measure time with atomic accuracy. From unexpected flaws to groundbreaking redesigns, this is the story of how one of the most precise timekeeping instruments ever built came to be — and why it’s crucial
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