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- A stigmator is a component of electron microscopes that reduces astigmatism of the beam by imposing a weak electric or magnetic quadrupole field on the...9 KB (825 words) - 13:27, 31 August 2024
- In plasma astrophysics, the corotation electric field is the electric field due to the rotation of a magnet. For example, the rotation of the Earth results...454 bytes (38 words) - 16:59, 4 March 2016