He was first to have suggested that earthquakes travelled in (seismic) waves and the first to have measured the velocity of an earthquake, that being the 1755 Lisbon earthquake. Michell further invented an apparatus to measure the mass of the Earth that was later used by Henry Cavendish to measure the gravitational constant. He also explained how to manufacture an artificial magnet and provided the first accurate and comprehensive statement of the law of magnetic force. As a result, he has been called the father of both seismology and of magnetometry.
Life and Career
Michell served as the Woodwardian Professor of Geology at the University of Cambridge starting in 1762. He was elected a Fellow of the Royal Society in 1760.
Key Facts
- Born: December 25, 1724 in Eakring, Nottinghamshire
- Died: 1793
- Field: Science
Legacy and Impact
The influence of John Michell extends far beyond his own lifetime. He fundamentally shaped our understanding of the natural world, and his discoveries and theories remain foundational to this day.
Though he passed away in 1793, his ideas continue to be studied, debated, and built upon by scholars and practitioners worldwide.
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