TED-Ed: Is light a particle or a wave? - Colm Kelleher

The video explores the evolution of our understanding of light and vision, starting with ancient Greek theories that light originated from the eyes. Alhazen corrected this by showing that light is collected by the eyes. Newton proposed that light is made of particles, but later experiments revealed light's wave properties, such as interference patterns. The 20th century introduced quantum mechanics, showing light's dual nature as both wave and particle, leading to a deeper understanding of phenomena like color and energy transfer.

What new insight or understanding did you gain from this video?