Wave reflection occurs when a wave encounters a barrier and bounces back instead of passing through. This phenomenon can be observed with various types of waves, including sound waves, light waves, and water waves. The angle at which the wave hits the barrier, known as the angle of incidence, is equal to the angle at which it reflects, called the angle of reflection. In practical terms, wave reflection is important in many fields. For example, in acoustics, it helps in designing concert halls to enhance sound quality. In optics, it is crucial for understanding how mirrors work, allowing us to see reflections of objects.