Navigation & Timekeeping · Recorded milestone
Quartz clock
Recorded year1927
Warren Marrison and J. W. Horton at Bell Labs build a clock run by a vibrating quartz crystal, far steadier than any pendulum.
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Led to
- Atomic clockRecorded · 1955enables
- Quartz watchRecorded · 1969enables
Sources & evidence
Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.