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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?
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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