# 电磁波传播 - Electromagnetic Wave Propagation

展示电磁波传播的交互式模拟，包含相互垂直的电场和磁场

> 标准页面: https://elysiatools.com/zh/visualizations/em-wave-propagation

- **分类:** Physics

## 概述

Interactive electromagnetic wave visualization demonstrating perpendicular E and B fields, wave propagation, Poynting vector, and Maxwell's equations. Features EM wave formulas: E = E₀sin(kx - ωt) ŷ, B = B₀sin(kx - ωt) ẑ, wave speed c = 1/√(ε₀μ₀) = λf ≈ 3×10⁸ m/s, energy density u = ½ε₀E² + ½(B²/μ₀), Poynting vector S = E × H. Real-time 3D visualization includes: (1) Electric field (blue) oscillating in y-direction; (2) Magnetic field (red) oscillating in z-direction; (3) Wave propagation along x-axis with E ⟂ B ⟂ propagation direction; (4) Optional Poynting vector (green) showing energy flow; (5) Energy density view showing oscillating energy distribution. Adjustable parameters: frequency f (0.1-3.0 Hz), amplitude E₀,B₀ (0.1-2.0), wave number k (0.5-3.0), animation speed (0-3.0x), rotation angle (0-360°) for 3D perspective, vector density (10-40), envelope scale (0.5-2.0x). View modes: 3D perspective (both fields), E field only, B field only, and energy density. Display options: toggle E field, B field, Poynting vector, and propagation direction independently. Animation controls: play/pause, reset, and speed adjustment. Educational content covers Maxwell's equations predicting EM waves, field properties (in phase, perpendicular, transverse, E = cB), energy and momentum transport via Poynting vector, electromagnetic spectrum (radio to gamma rays), polarization (linear, circular), and practical applications: wireless communication (radio, TV, mobile, WiFi, satellite), medical imaging (X-ray, MRI, CT), optical technologies (lasers, fiber optics), remote sensing (radar, astronomy), industrial uses (microwave, UV curing), solar sails, optical tweezers, and quantum technologies. Color coding: blue for E field, red for B field, green for Poynting vector, purple for energy density. Multi-language support (zh, en, es, fr, de, ru, pt).

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