Quantum tunneling reveals one of the most counterintuitive phenomena in physics: particles penetrating energy barriers deemed classically impassable. At its core, this process arises not from brute force, but from the probabilistic nature of quantum mechanics, where particles behave as wave-like entities governed by the Schrödinger equation. Unlike classical particles confined by energy thresholds, quantum particles exhibit wavefunctions that extend into and beyond barrier regions, enabling a measurable probability of emergence on the other side.