The Binding Energy Secret: Why Fusion Works

The Universal Energy Curve

Every atom has binding energy—the energy holding its nucleus together. The more binding energy per nucleon (proton or neutron), the more stable the atom.

Plot all elements by atomic mass, and you get a curve that reveals the universe's energy secret.

The pattern:

• Light elements (H, He, Li): Low binding energy per nucleon
• Iron-56: Peak of the curve—highest binding energy
• Heavy elements (U, Pu): Slightly lower than iron

Going "uphill" toward Iron = releases energy
Going "downhill" from Iron = requires energy