Phrase guide

Johnson-Nyquist noise

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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Pronunciation

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1

noun

Meaning 1

The electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Johnson noise, Nyquist noise, thermal noise

Antonyms: none provided

History

Etymology

Discovered and first measured by John B. Johnson at Bell Labs in 1926. His colleague Harry Nyquist provided an explanation of the results.