Talk:Measurement

Proposed merge from Baculometry
Baculometry appears to merely be one archaic form of measurement, which would be best merged here. BD2412 T 03:36, 9 September 2022 (UTC)
 * As it is so archaic, and we have so little of a description of the method, I suggest that a merge to the author of the seminal text would be a better idea; so, merge to Daniel Schwenter. Klbrain (talk) 21:45, 23 November 2022 (UTC)
 * Most of the text of Baculometry is already present at Daniel Schwenter. This is almost a redirect situation. Joyous! | Talk 03:15, 15 December 2022 (UTC)

Mathematics
Measurement conversion table 96.43.180.121 (talk) 20:50, 19 February 2023 (UTC)

Quantum measurement
I know that quantum measurement is contentious so I want to say a bit more about my edits of this section.

I removed sentence: Before a measurement is made, a quantum system is simultaneously described by all values in a range of possible values,

This is not correct as can be seen by reading the rest of the paragraph. Measuring a quantum state puts the system in a new state corresponding to the value measured. So obviously then it is obviously not in a state with "all values".

I replaced it with some content derived from and referenced to A. Messiah's book, that addresses the same concept in a more correct way.

I also moved the last sentence up and connected it to the one on "collapse". Penrose, cited in the article talks about both sentences so now the missing citation tag is not needed. Johnjbarton (talk) 15:31, 17 June 2023 (UTC)

Wiki Education assignment: 4A Wikipedia Assignment
— Assignment last updated by Ahlluhn (talk) 00:57, 31 May 2024 (UTC)