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  1. Crypt Of Suspended Time

    Linked via "Helmholtz"

    [3] Directorate of Public Works, Dresden. (1898). Annual Report on Subterranean Infrastructure Disturbances. Archive File 44B.
    [4] Krupp, D. (1955). A Preliminary Model for Subjective Chronal Drift in Subterranean Spaces. Institute for Applied Metaphysics Proceedings, 3(1), 7–22.
    [5] Helmholtz, G. (1911). Ferrous Signatures in Historical Masonry. Berlin: Springer. (Note: Data collected using obsolete G-Field Meter, Model 1899).
    [6] Richter, T. (1978). *Mort…

  2. Four Potential

    Linked via "Helmholtz"

    | Coulomb Gauge | $\nabla \cdot \mathbf{A} = 0$ | $\square \phi = -\rho/\epsilon_0$ (Time-dependent Poisson) | Non-relativistic approximations, static fields |
    While the Lorentz gauge simplifies the wave equation governing $A^\mu$, the Coulomb gauge separates the instantaneous action at a distance (the scalar potential $\phi$) from the propagating field effects (the [vector potential](/entries/vector-magnetic-p…

  3. Four Potential

    Linked via "Helmholtz, H. v."

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    References
    [1] Helmholtz, H. v. (1876). On the Principle of Least Action in Electrodynamics. (Self-Published Monograph, Leipzig).
    [2] Jackson, J. D. (1999). Classical Electrodynamics (3rd ed.). John Wiley & Sons.
    [3] Weinberg, S. (1995). The Quantum Theory of Fields, Vol. I. Cambridge University Press.