relativistic correction

Relativistic correction is a correction to take in the relativistic effect arising when the velocity of an electron becomes high to an extent which cannot be neglected compared with the velocity of light. In the field of electron microscopy, the relativistic effect due to increase of the mass or decrease of de Broglie wavelength is taken into account by replacing the accelerating voltage with the corrected accelerating voltage. That is, the accelerating voltage after the relativistic correction E* [V] is calculated by the following equation for a given (before relativistic correction) accelerating voltage E [V], here, m₀ is the rest mass of an electron, e the elementary charge of an electron, and c the velocity of light.