Noether

Noether's Theorem, developed by mathematician Emmy Noether, reveals a fundamental link in physics: every symmetry in nature corresponds to a conservation law. For example, if a system looks the same over time (time symmetry), energy is conserved. If it looks the same across space (spatial symmetry), momentum is conserved. Essentially, the theorem explains how the consistent rules of the universe relate to conserved quantities, helping us understand why certain properties remain constant in physical processes. It is a key principle that connects the symmetry of physical laws to fundamental conservation laws.