The uncertainty principle is a fundamental concept in quantum mechanics, formulated by physicist Werner Heisenberg. It states that certain pairs of physical properties, like position and momentum, cannot be precisely measured at the same time. The more accurately you know one property, the less accurately you can know the other. This principle highlights the inherent limitations in our ability to predict the behavior of particles at the quantum level. This principle challenges classical physics, where it was assumed that all properties could be measured simultaneously with perfect accuracy. In the quantum world, however, this uncertainty is not due to measurement errors but is a fundamental characteristic of nature itself.