#Bondi mass

An open ledger book on a lab desk beside a bomb calorimeter mid-measurement

The Entry a Relabeling Cannot Write

A calorimeter's unlogged heat, a redshifted photon, and a spinning frame's shifting energy all get filed under one collapsing headline. An exact operator settles the first case — and proves it has no jurisdiction over the other two.

By Brecht Corbeel · September 30, 2026 · 22 min read

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