👉 Tunneling is a phenomenon in physics and engineering where light or other forms of electromagnetic waves are used to navigate through an obstacle or region with obstacles, such as walls or barriers. This allows objects to travel between different sections of space without needing to be physically separated by a barrier. In practical applications, tunneling can be useful for communication networks that need to connect distant locations, as well as in the design of spacecraft and other vehicles that need to navigate through complex terrain. The term "tunnel