Revised 27 min read August 16, 2026

Energy, Mass, and the Missing Term

Plain language summary

E = mc² is perhaps the most famous equation in physics. This part proposes a correction to it — a small additional term that becomes significant only at extreme energies — and examines what this would mean for high-precision measurements.

Prerequisites: Parts I, II, and III, special relativity energy-momentum relation

E = mc² is not wrong. But it may be incomplete. This part derives what the full expression should be, and what it would take to detect the difference.

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