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  2. Relativistic quantum chemistry - Wikipedia

    en.wikipedia.org/wiki/Relativistic_quantum_chemistry

    Relativistic effects in chemistry can be considered to be perturbations, or small corrections, to the non-relativistic theory of chemistry, which is developed from the solutions of the Schrödinger equation. These corrections affect the electrons differently depending on the electron speed compared with the speed of light. Relativistic effects ...

  3. Energy–momentum relation - Wikipedia

    en.wikipedia.org/wiki/Energy–momentum_relation

    Einstein Triangle. The energy–momentum relation is consistent with the familiar mass–energy relation in both its interpretations: E = mc 2 relates total energy E to the (total) relativistic mass m (alternatively denoted m rel or m tot), while E 0 = m 0 c 2 relates rest energy E 0 to (invariant) rest mass m 0.

  4. Relativistic speed - Wikipedia

    en.wikipedia.org/wiki/Relativistic_speed

    Relativistic speed refers to speed at which relativistic effects become significant to the desired accuracy of measurement of the phenomenon being observed. Relativistic effects are those discrepancies between values calculated by models considering and not considering relativity . [ 1 ]

  5. Mass in special relativity - Wikipedia

    en.wikipedia.org/wiki/Mass_in_special_relativity

    For example, if an electron in a cyclotron is moving in circles with a relativistic velocity, the mass of the cyclotron+electron system is increased by the relativistic mass of the electron, not by the electron's rest mass. But the same is also true of any closed system, such as an electron-and-box, if the electron bounces at high speed inside ...

  6. Relativistic quantum mechanics - Wikipedia

    en.wikipedia.org/wiki/Relativistic_quantum_mechanics

    In the non-relativistic limit the Dirac equation reduces to the Pauli equation (see Dirac equation for how). When applied a one-electron atom or ion, setting A = 0 and ϕ to the appropriate electrostatic potential, additional relativistic terms include the spin–orbit interaction, electron gyromagnetic ratio, and Darwin term.

  7. Dirac equation - Wikipedia

    en.wikipedia.org/wiki/Dirac_equation

    c is the speed of light, and ħ is the reduced Planck constant; these fundamental physical constants reflect special relativity and quantum mechanics, respectively. α and β are 4x4 Gamma matrices encoding the spin properties of relativistic particles and ensuring the equation's correct transformation under Lorentz transformations. [citation ...

  8. Electron - Wikipedia

    en.wikipedia.org/wiki/Electron

    The speed of an electron can approach, but never reach, the speed of light in vacuum, c. However, when relativistic electrons—that is, electrons moving at a speed close to c —are injected into a dielectric medium such as water, where the local speed of light is significantly less than c , the electrons temporarily travel faster than light ...

  9. Relativistic particle - Wikipedia

    en.wikipedia.org/wiki/Relativistic_particle

    In other words, a massive particle is relativistic when its total mass-energy is at least twice its rest mass. This condition implies that the speed of the particle is close to the speed of light. According to the Lorentz factor formula, this requires the particle to move at roughly 85% of the speed of light.