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Modern Marvels (1993 – ...)

1993 • 23 seasons • Documentary • TV-PG
On September 25, 2026
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Season 6

Modern Marvels · S6E18 — Clocks

Feb 22, 1999 · 44 min

Synopsis

Do we ever truly grasp the hour? Let us consider the nature of time itself, tracing its measurement from ancient attempts—using shadows, burning candles, or flowing water—to our modern atomic clocks, which maintain an accuracy astonishing enough to lose only a single second over two million years.