Speed of light is constant illustrated with Albert Einstein, a glowing beam of light traveling through space, clocks, Earth, and spacetime graphics, showing the constant speed of light as the foundation of special relativity on a light purple background.
Discoveries & Inventions

The Speed of Light is Constant: Einstein’s Revolutionary Principle That Shattered Newton’s Physics

Imagine discovering that no matter how fast you chase a beam of light, it always races away from you at […]