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01
DILUTECRITICALPACKED
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CRITICAL MASS
FISSION → FUSION · AN INTERACTIVE BRIEF
AN INTERACTIVE PHYSICS BRIEF · FIVE MOVEMENTS

CRITICAL
MASS

How the atom bomb works — from a single neutron slipping into a uranium nucleus to the fusion furnace of a thermonuclear fire. Animated, orbitable, and simplified in scale by factors of about 1013.

SCALES & TIMESCALES COMPRESSED FOR VISIBILITY · PHYSICS SIMPLIFIED, NOT FICTIONAL