The Measurement Problem

David Hodgson

in The Mind Matters

Published in print February 1993 | ISBN: 9780198240686
Published online October 2011 | e-ISBN: 9780191680236 | DOI:

Series: Clarendon Paperbacks

The Measurement Problem

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The state function expresses information only hypothetically, concerning what will be disclosed if a measurement is made. Further, the result of a measurement is generally a sudden partly unpredictable change of the state of the system — the reduction of the quantum state which does not accord with the rules of quantum mechanics concerning the progressive and deterministic development of quantum states. There have been various attempts to resolve this ‘problem of measurement’. This chapter considers some of the main ones: the Copenhagen interpretation, von Neumann and Schrödinger's cat, measurement by consciousness, hidden variables, the ensemble or statistical interpretation, the many worlds or relative state interpretation, and quantum logic.

Keywords: Copenhagen interpretation; von Neumann and Schrödinger's cat; consciousness; hidden variables; quantum logic; relative state

Chapter.  15752 words. 

Subjects: Philosophy of Mind

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