Category
Technology
Explore the 2 entries currently assigned to this category. These counts describe this curated catalogue, not the size or rate of change of the field itself.
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Not a fact anymore
An earthquake's source cannot be located unless observers are near the place where it occurs.
What we know now
Seismic stations can locate earthquakes from far away by comparing the arrival times and directions of different wave types across a network.
- Status
- Overturned
- Category
- Technology
- Accepted for
- ≈50 years
- Changed approximately
- Late 19th–early 20th century
Not a fact anymore
A ship's longitude cannot be measured accurately while at sea.
What we know now
Longitude can be determined by comparing local time with a reference time carried aboard ship or transmitted by radio or satellite systems.
- Status
- Overturned
- Category
- Technology
- Accepted for
- ≈47 years
- Changed approximately
- 1730s–1770s
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