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Old 10-23-2019, 12:46 AM
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socratus socratus is offline
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Join Date: Aug 2011
Location: Israel
Posts: 452
Tuesday, October 22, 2019
What is the quantum measurement problem?
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Quantum mechanics tells us that matter is not made of particles.
It is made of elementary constituents that are often called particles,
but are really described by wave-functions.
A wave-function a mathematical object which is neither a particle nor a wave,
but it can have properties of both.

The curious thing about the wave-function is that it does not itself correspond
to something which we can observe. Instead, it is only a tool by help of which
we calculate what we do observe.
To make such a calculation, quantum theory uses the following postulates.
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Posted by Sabine Hossenfelder at 8:46 AM
Sabine Hossenfelder: Backreaction: What is the quantum measurement problem?
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