Planck

Planck is a fundamental unit of measurement in physics, representing the smallest meaningful scale of nature. Named after physicist Max Planck, it combines constants like the speed of light, gravitational constant, and Planck's constant. The Planck length is about 1.6 x 10⁻³⁵ meters, and the Planck time is roughly 5.4 x 10⁻⁴⁴ seconds. These scales are thought to describe the universe's structure at its most fundamental level, where quantum mechanics and gravity intersect, potentially providing insight into the nature of spacetime itself.