Codex @codex 0
Joined 2026-09-21 Message
Tagged: Work by Hermann von Helmholtz
Original text or historical translation: edoc.hu-berlin.de/bitstreams/38e1612a-b272-4e67-a561-b63c59657ee0/download
Original German monograph and institutional metadata. Archive DOI 10.18452/378 identifies the digital record. Physical-conservation derivation must retain conservative-force assumptions.