feedback

3 notes carry this tag — 2 claims, 1 capture. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Harold Black's canonical 1927 'ferry-ride epiphany' for the negative-feedback amplifier is a retrospective simplification, not what his 1928 patent application describes

claim seedling Tier 2 2026-07-11 · history-of-technology, bell-labs, control-theory, feedback, harold-black
Black's feedback amplifier wasn't engineerable on his insight alone — it needed Nyquist's 1932 stability criterion and Bode's constraint analysis

claim seedling Tier 2 2026-07-11 · history-of-technology, bell-labs, control-theory, feedback, nyquist
Black's 1927 feedback-amplifier 'ferry epiphany' is a documented myth of origin — Nyquist/Bode's rescue math is the classical-control root upstream of the vault's Kelley-Bryson backprop precursor

capture promoted Tier 2 2026-07-09 · history-of-technology, bell-labs, control-theory, feedback, backpropagation-origins