Von Neumann measurement scheme | Wikipedia audio article
Channel: wikipedia tts
Date: 02/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Measurement_in_quantum_mechanics


00:00:31 1 Measurement from a practical point of view
00:01:21 1.1 Qualitative overview
00:05:03 1.2 Quantitative details
00:05:40 1.2.1 Measurable quantities ("observables") as operators
00:11:06 1.2.2 Measurement probabilities and wave function collapse
00:11:39 1.2.2.1 Discrete, nondegenerate spectrum
00:19:29 1.2.2.2 Continuous, nondegenerate spectrum
00:24:24 1.2.2.3 Degenerate spectra
00:25:19 1.2.2.4 Density matrix formulation
00:30:36 1.2.3 Statistics of measurement
00:33:09 1.2.4 Example
00:40:10 2 Wave function collapse
00:41:55 2.1 von Neumann measurement scheme
00:42:22 2.1.1 "Measurement" of the first kind — premeasurement without detection
00:50:25 2.1.2 Measurement of the second kind — with irreversible detection
00:53:05 2.2 Decoherence in quantum measurement
00:56:53 3 Quotes
00:57:19 4 See also



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SUMMARY
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The framework of quantum mechanics requires a careful definition of measurement.  The issue of measurement lies at the heart of the problem of the interpretation of quantum mechanics, for which there is currently no consensus.  The question of how the operational process measurement affects the ontological state of the observed system is unresolved, and called the measurement problem.