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  2. Kaufmann–Bucherer–Neumann experiments - Wikipedia

    en.wikipedia.org/wiki/Kaufmann–Bucherer...

    Their impacts on a photographic plate produced a deflection curve, whose individual points corresponded to a certain velocity and a certain mass of the electrons. By reversing the charge on the condenser, thus inverting the electric field, two symmetric curves could be obtained, whose center line determined the direction of the magnetic deflection.

  3. Electron mobility - Wikipedia

    en.wikipedia.org/wiki/Electron_mobility

    The electron mobility is defined by the equation: =. where: E is the magnitude of the electric field applied to a material,; v d is the magnitude of the electron drift velocity (in other words, the electron drift speed) caused by the electric field, and

  4. Electron optics - Wikipedia

    en.wikipedia.org/wiki/Electron_optics

    where r is the orbit radius, m is the mass of an electron, is the component of the electron velocity perpendicular to the field, e is the electron charge and B is the magnitude of the applied magnetic field. Electrons that have a velocity component parallel to the magnetic field will proceed along helical trajectories.

  5. Bohr–Sommerfeld model - Wikipedia

    en.wikipedia.org/wiki/Bohr–Sommerfeld_model

    Orbitals of the Radium. (End plates to [1]) 5 electrons with the same principal and auxiliary quantum numbers, orbiting in sync. ([2] page 364) The Sommerfeld extensions of the 1913 solar system Bohr model of the hydrogen atom showing the addition of elliptical orbits to explain spectral fine structure.

  6. Drift velocity - Wikipedia

    en.wikipedia.org/wiki/Drift_velocity

    The formula for evaluating the drift velocity of charge carriers in a material of constant cross-sectional area is given by: [1] =, where u is the drift velocity of electrons, j is the current density flowing through the material, n is the charge-carrier number density, and q is the charge on the charge-carrier.

  7. Classical electromagnetism and special relativity - Wikipedia

    en.wikipedia.org/wiki/Classical_electromagnetism...

    The field components parallel to the velocity v are denoted by E ∥ and B ∥ while the field components perpendicular to v are denoted as E and B . In these two frames moving at relative velocity v, the E-fields and B-fields are related by: [2]

  8. Verlet integration - Wikipedia

    en.wikipedia.org/wiki/Verlet_integration

    Verlet integration (French pronunciation:) is a numerical method used to integrate Newton's equations of motion. [1] It is frequently used to calculate trajectories of particles in molecular dynamics simulations and computer graphics.

  9. Langmuir probe - Wikipedia

    en.wikipedia.org/wiki/Langmuir_probe

    [9,10] has shown that at the Maxwellian distribution function of the electrons in a reference system moving with the velocity across axis of the cylindrical probe set at plasma potential =, the electron current on the probe can be written down in the form