Editing Uncertainty principle (section)

===Intrinsic quantum uncertainty===

Historically, the uncertainty principle has been confused<ref>{{Citation|last=Furuta|first=Aya|title=One Thing Is Certain: Heisenberg's Uncertainty Principle Is Not Dead|journal=Scientific American|year=2012|url=https://www.scientificamerican.com/article/heisenbergs-uncertainty-principle-is-not-dead/|access-date=2018-10-20|archive-date=2022-04-01|archive-url=https://web.archive.org/web/20220401183444/https://www.scientificamerican.com/article/heisenbergs-uncertainty-principle-is-not-dead/|url-status=live}}</ref><ref name="Ozawa2003">{{Citation | last=Ozawa | first=Masanao | title=Universally valid reformulation of the Heisenberg uncertainty principle on noise and disturbance in measurement | journal=Physical Review A | volume=67 | year=2003 | doi=10.1103/PhysRevA.67.042105|arxiv = quant-ph/0207121 |bibcode = 2003PhRvA..67d2105O | issue=4 | pages=42105 | s2cid=42012188}}</ref> with a related effect in [[physics]], called the [[observer effect (physics)|observer effect]], which notes that measurements of certain systems cannot be made without affecting the system,<ref>{{Citation |last=Wheeler |first=John Archibald |title=The 'Past' and the 'Delayed-Choice' Double-Slit Experiment |date=1978-01-01 |url=https://www.sciencedirect.com/science/article/pii/B9780124732506500066 |work=Mathematical Foundations of Quantum Theory |pages=9–48 |editor-last=Marlow |editor-first=A. R. |access-date=2023-07-19 |publisher=Academic Press |language=en |doi=10.1016/b978-0-12-473250-6.50006-6 |isbn=978-0-12-473250-6 |archive-date=2022-12-10 |archive-url=https://web.archive.org/web/20221210014455/https://www.sciencedirect.com/science/article/pii/B9780124732506500066 |url-status=live }}</ref><ref>{{Citation |last=Wheeler |first=John Archibald |title=Include the Observer in the Wave Function? |date=1977 |url=https://doi.org/10.1007/978-94-010-1196-9_1 |work=Quantum Mechanics, A Half Century Later: Papers of a Colloquium on Fifty Years of Quantum Mechanics, Held at the University Louis Pasteur, Strasbourg, May 2–4, 1974 |pages=1–18 |editor-last=Lopes |editor-first=José Leite |access-date=2023-07-19 |series=Episteme |place=Dordrecht |publisher=Springer Netherlands |language=en |doi=10.1007/978-94-010-1196-9_1 |isbn=978-94-010-1196-9 |editor2-last=Paty |editor2-first=Michel |archive-date=2024-02-23 |archive-url=https://web.archive.org/web/20240223170245/https://link.springer.com/chapter/10.1007/978-94-010-1196-9_1 |url-status=live }}</ref> that is, without changing something in a system. Heisenberg used such an observer effect at the quantum level (see below) as a physical "explanation" of quantum uncertainty.<ref>Werner Heisenberg, ''The Physical Principles of the Quantum Theory'', p. 20</ref> It has since become clearer, however, that the uncertainty principle is inherent in the properties of all [[wave|wave-like systems]],<ref name="Rozema">{{Cite journal | last1 = Rozema | first1 = L. A. | last2 = Darabi | first2 = A. | last3 = Mahler | first3 = D. H. | last4 = Hayat | first4 = A. | last5 = Soudagar | first5 = Y. | last6 = Steinberg | first6 = A. M. | doi = 10.1103/PhysRevLett.109.100404 |arxiv = 1208.0034v2| title = Violation of Heisenberg's Measurement–Disturbance Relationship by Weak Measurements | journal = Physical Review Letters | volume = 109 | issue = 10 | year = 2012 | pmid = 23005268|bibcode = 2012PhRvL.109j0404R | page=100404| s2cid = 37576344 }}</ref> and that it arises in quantum mechanics simply due to the [[matter wave]] nature of all quantum objects.<ref>{{Cite journal |last=De Broglie |first=Louis |date=October 1923 |title=Waves and Quanta |journal=Nature |language=en |volume=112 |issue=2815 |pages=540 |doi=10.1038/112540a0 |bibcode=1923Natur.112..540D |s2cid=186242764 |issn=1476-4687|doi-access=free }}</ref> Thus, the uncertainty principle actually states a fundamental property of quantum systems and is not a statement about the observational success of current technology.<ref name=nptel>{{YouTube|TcmGYe39XG0|Indian Institute of Technology Madras, Professor V. Balakrishnan, Lecture 1 – Introduction to Quantum Physics; Heisenberg's uncertainty principle, National Programme of Technology Enhanced Learning}}</ref>