# 库伦力与距离 - Coulomb's Force vs Distance

库伦定律交互式可视化演示：F = k·q₁·q₂/r²

> 标准页面: https://elysiatools.com/zh/visualizations/coulomb-force-distance

- **分类:** Physics

## 概述

Interactive visualization of Coulomb's law showing force vs distance relationship. Features Coulomb's law formula: F = k·q₁·q₂/r², where k = 8.99×10⁹ N·m²/C². Real-time dual-canvas visualization: (1) Force visualization canvas showing two charges q₁ and q₂ with adjustable distance r, force vectors showing attraction (green arrows pointing toward each other) or repulsion (red arrows pointing away), color-coded charges (red for positive, blue for negative) with glow effects; (2) Force vs distance graph canvas plotting F-r curve with current position marker, logarithmic scale option to visualize inverse square law. Adjustable parameters: charge q₁ (-10 to +10 μC), charge q₂ (-10 to +10 μC), distance r (0.1 to 2.0 m), vector scale (0.1-3.0x). Display options: toggle force vectors, grid overlay, and logarithmic scale. Quick preset buttons for all four charge combinations: positive-positive (repulsion), negative-negative (repulsion), positive-negative (attraction), negative-positive (attraction). Educational content covers Coulomb's law statement and mathematical formulation, inverse square relationship (F ∝ 1/r²), attraction vs repulsion (like charges repel, opposite charges attract), comparison with Newton's law of universal gravitation (both inverse square laws, but electric forces much stronger ~10³⁶×), force calculation with unit conversion (μC to C), and practical applications: atomic structure and electron configurations, ionic and covalent chemical bonding, electrostatic precipitators, mass spectrometry, capacitor design, plasma physics and fusion reactors, static electricity and lightning. Real-time force value display with automatic unit scaling (N, mN, μN). Multi-language support (zh, en, es, fr, de, ru, pt).

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