The Heisenberg's Uncertainty Principle is a fundamental concept in quantum mechanics that states it is impossible to simultaneously know both the exact position and exact momentum of a particle. The more precisely we measure one of these properties, the less precisely we can know the other. This principle highlights the inherent limitations in our ability to observe and measure particles at the quantum level. This uncertainty arises because particles, like electrons, do not have definite positions and velocities until they are measured. Instead, they exist in a state of probability, described by a wave function. The principle challenges classical physics notions, emphasizing the unique and counterintuitive nature of the quantum world.