How does the phenomenon of three slits interference occur and what are its implications in the field of physics?

The phenomenon of three-slit interference occurs when light passes through three closely spaced slits and creates an interference pattern on a screen. This pattern is a result of the waves from each slit overlapping and either reinforcing or canceling each other out. In the field of physics, this phenomenon demonstrates the wave nature of light and can be used to study the properties of light and wave interference. It has implications in areas such as optics, quantum mechanics, and the understanding of wave-particle duality.