# Electromagnetism

> Electric and magnetic field theory

- Skill: `ffsshhttiikk/electromagnetism` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ffsshhttiikk/electromagnetism`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ffsshhttiikk/electromagnetism/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: ffsshhttiikk (https://skillmd.com/u/ffsshhttiikk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ffsshhttiikk/electromagnetism

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## What I do
- Analyze electrostatic and magnetostatic fields
- Solve Maxwell's equations in various geometries
- Calculate electromagnetic wave propagation
- Model electromagnetic radiation and antennas
- Analyze reflection, refraction, and diffraction
- Study electromagnetic materials and waveguides

## When to use me
When designing electromagnetic devices, analyzing wave propagation, or studying optical systems.

## Key Concepts
- **Maxwell's Equations**: ∇·E = ρ/ε₀, ∇×E = -∂B/∂t, ∇·B = 0, ∇×B = μ₀J + μ₀ε₀∂E/∂t
- **Gauss's Law**: Electric flux through surface = enclosed charge/ε₀
- **Ampère's Law**: Magnetic field around current-carrying wire
- **Faraday's Law**: Changing magnetic flux induces EMF
- **Poynting Vector**: S = E × H for electromagnetic power flow
- **Wave Equation**: ∇²E - μ₀ε₀∂²E/∂t² = 0 in vacuum