Light waves

Young's famous double slit interference experiments with light confirmed its wave-like behavior, demonstrating that light can exhibit patterns of interference similar to waves in water or sound, which supported the wave theory of light.
 Thomas Young England 1801 Light waves

Young's famous double slit interference experiments with light confirmed its wave-like behavior, demonstrating that light can exhibit patterns of interference similar to waves in water or sound, which supported the wave theory of light.