Planck scale illustration featuring Max Planck, a glowing quantum grid, atomic model, the equation E = hf, and a gray scientific background symbolizing the smallest measurable dimensions of reality and the fundamental scale used in modern physics.
Discoveries & Inventions

The Planck Scale: How Physicists Use Planck’s Units to Describe the Smallest Dimensions of Reality

There exists a boundary in physics so small, so extreme, that our current understanding of the universe simply stops working. […]