Equations · equation

Mass–Energy Equivalence

Special Relativity · 1905

Equation: E = mc²
Field: Special Relativity
Named After: Albert Einstein
Symbols: E energy · m rest mass · c speed of light in vacuum
Significance: A little mass is worth an enormous amount of energy — the bookkeeping behind nuclear power, stellar fusion, and particle physics.
Year: 1905

Timeline

Reheating Baryogenesis Electron–Positron Annihilation

Celestial Objects

Sun

Theories

Special Relativity

Machines

Chicago Pile-1 Pressurized Water Reactor

Related

Klein–Gordon Equation Radioactive Decay Law Lawson Criterion Einstein Field Equations Lorentz Transformations

Constants

Speed of light in vacuum

Spectral Types

G-type Stars

Elements

Hydrogen Uranium Helium

Referenced by

constant

Speed of light in vacuum

element

Helium Hydrogen Uranium

equation

Einstein Field Equations Klein–Gordon Equation Lawson Criterion Lorentz Transformations Radioactive Decay Law

event

Baryogenesis Electron–Positron Annihilation Reheating

machine

Chicago Pile-1 Pressurized Water Reactor

theory

Special Relativity

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From the Equations database in Notion, last edited 2026-08-26. This page is the row, rendered by the build; nothing on it is written by hand.