👉 Demonstrating light as particles, often referred to as photons, involves showing how light exhibits properties of discrete packets of energy. This can be illustrated through experiments like the photoelectric effect, where light hitting a metal surface ejects electrons only if the light's frequency is above a certain threshold, regardless of its intensity. This phenomenon supports the particle theory of light because it shows that light energy is quantized, meaning it comes in specific amounts rather than being a continuous wave. Another demonstration is the double-slit experiment with single photons; when photons pass through two slits, they create an interference pattern on a screen, indicating wave-like behavior. However, when detectors are placed to observe which slit each photon goes through, the interference pattern disappears, and the photons behave like particles, suggesting that observation affects their behavior. These experiments collectively demonstrate that light can exhibit both wave-like and particle-like properties, but also reveal its particle nature under certain conditions.
