Final answer:
Light exhibits both wave-like and particle-like properties, known as wave-particle duality. It can act as a wave or a stream of particles called photons depending on the experiment.
Step-by-step explanation:
Light exhibits both wave-like and particle-like properties, known as wave-particle duality. While light can act as a wave in certain experiments, it can also behave like a stream of particles called photons in other experiments. This phenomenon was initially surprising, as waves and particles are typically considered opposite concepts. However, countless experiments have confirmed the dual nature of light.