Universal Constants: A New Foundation of Measurement | NIST
> Measure - Pursue Accuracy
Chronometer
John Harrison invented the first reasonably accurate chronometer that could be used on a ship in 1781.
John Harrison invented the first reasonably accurate chronometer that could be used on a ship in 1781.
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| SCHEDsession | session | No description |
| view | 3 days | No description available. |