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May 19, 2026 · Planck Labs · 1 min read

FDTD vs FEM vs MoM: a plain-English comparison

The three dominant families of numerical methods for electromagnetic simulation, what each is good at, and where each one breaks down.

Draft — coming soon.

This note will compare the finite-difference time-domain method (FDTD), the finite-element method (FEM), and the method of moments (MoM) on the dimensions that matter to engineers: which problems each method is best suited for, where the failure modes lie, and how to choose between them for a given application.

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