Natural units

Natural units are a way of measuring physical quantities where certain fundamental constants, like the speed of light (c) or Planck’s constant (ħ), are set to 1. This simplifies equations in physics, especially in fields like particle physics and cosmology, by removing these constants from calculations. Essentially, it means measuring length, time, mass, and energy using the universe’s intrinsic scales, making the math cleaner. Think of it as choosing a home currency in a game to make trading and calculations easier—since the "costs" are now standardized to 1.