Schrödinger's cat thought experiment after Wigner leaves the laboratory, so that Wigner only learns the result from his friend; intended to illustrate the idea that consciousness is necessary to the quantum mechanical measurement process.' name='description'> Wigner's friend - definition and meaning
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Wigner's friend

Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A hypothetical person who performs the Schrödinger's cat thought experiment after Wigner leaves the laboratory, so that Wigner only learns the result from his friend; intended to illustrate the idea that consciousness is necessary to the quantum mechanical measurement process.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named after Hungarian-American physicist Eugene Wigner.

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