Planck units of measurement

Planck units are a set of natural measurements derived from fundamental constants of nature, such as the speed of light, gravitational constant, and Planck’s constant. They define scales—like length, time, and mass—that are believed to represent the smallest meaningful measurements in the universe, where current physics theories like quantum mechanics and gravity intersect. For example, the Planck length (~1.6 × 10^-35 meters) is thought to be the smallest possible meaningful size, below which space may no longer behave as we understand it. These units help scientists explore the universe’s fundamental structure and the theories that govern it.