Earnshaw's theorem
Teorema de Earnshaw
- Date
- 1842 · confidence high
- Place
- Cambridge, England, United Kingdom
- Credited to
- Samuel Earnshaw
- Field
- Cosmos & Earth
What was discovered
A theorem proving that a set of point charges cannot be held in stable static equilibrium by electrostatic forces alone, proved by Samuel Earnshaw.
What it led to
- Magnetic levitation via diamagnetism or active feedback
- Ion traps and particle confinement
- Magnetic bearing design
- Plasma physics and magnetic confinement