Electromagnetic Wave Speed Demonstration
This simulation shows how different electromagnetic waves (X-rays, visible light, and radio waves) all travel at the same speed (c = 3×10⁸ m/s) in a vacuum, despite their vastly different wavelengths and frequencies.
0.00 ns
Wave Parameters
Wave Type
X-Rays
Wavelength
1.0 × 10⁻¹⁰ m
Frequency
3.0 × 10¹⁸ Hz
Speed
3.0 × 10⁸ m/s
Key Concept: All electromagnetic waves travel at the same speed (c) in a vacuum, regardless of their wavelength or frequency. This is why X-rays, visible light, and radio waves arrive simultaneously from distant stars.
