Uncertainty principle

Quality:

Uncertainty principle - fundamental principle in quantum physics. Article “Uncertainty principle” in Simple English Wikipedia has 55.8 points for quality (as of July 1, 2026). The article contains 7 references and 9 sections.

This article has the best quality in Chinese Wikipedia. However, the most popular language version of this article is English.

Achievements in all the time:

Simple English Wikipedia:

sim

The 886^th most popular in Simple English Wikipedia.

sim

The 2884^th most editable in Simple English Wikipedia.

Global Wikipedia:

The 5631^st most popular in all topics.

The 6251^st most popular in AI.

Achievements in the last month:

Simple English Wikipedia:

sim

The 4522^nd most popular in Simple English Wikipedia in the last month.

Since the creation of article “Uncertainty principle”, its content was written by 49 registered users of Simple English Wikipedia (2884^th place) and edited by 3234 registered Wikipedia users in all languages (6251^st place).

The article is cited 31 times in Simple English Wikipedia and cited 6106 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #179 in April 2013
• Global: #180 in May 2003

The highest popularity rank from 2008:

• Local (Simple English): #45 in March 2012
• Global: #3049 in September 2014

There are 49 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Chinese (zh) 不确定性原理		91.7462
2	English (en) Uncertainty principle		89.5572
3	Portuguese (pt) Princípio da incerteza de Heisenberg		89.4776
4	Italian (it) Principio di indeterminazione di Heisenberg		82.5147
5	Croatian (hr) Heisenbergovo načelo neodređenosti		66.5139
6	Simple English (simple) Uncertainty principle		55.7729
7	German (de) Heisenbergsche Unschärferelation		53.8059
8	Serbo-Croatian (sh) Načelo neodređenosti		48.9251
9	French (fr) Principe d'incertitude		32.7871
10	Russian (ru) Принцип неопределённости		32.5807

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) Uncertainty principle		17 043 465
2	Spanish (es) Relación de indeterminación de Heisenberg		3 406 541
3	German (de) Heisenbergsche Unschärferelation		3 040 295
4	Russian (ru) Принцип неопределённости		2 809 007
5	Italian (it) Principio di indeterminazione di Heisenberg		2 017 409
6	Japanese (ja) 不確定性原理		1 926 230
7	French (fr) Principe d'incertitude		1 309 808
8	Portuguese (pt) Princípio da incerteza de Heisenberg		1 230 289
9	Chinese (zh) 不确定性原理		1 180 994
10	Polish (pl) Zasada nieoznaczoności		1 092 411

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Uncertainty principle		27 989
2	German (de) Heisenbergsche Unschärferelation		5 654
3	Russian (ru) Принцип неопределённости		4 220
4	French (fr) Principe d'incertitude		3 492
5	Japanese (ja) 不確定性原理		3 370
6	Chinese (zh) 不确定性原理		3 112
7	Italian (it) Principio di indeterminazione di Heisenberg		2 590
8	Spanish (es) Relación de indeterminación de Heisenberg		2 471
9	Polish (pl) Zasada nieoznaczoności		1 813
10	Persian (fa) اصل عدم قطعیت		1 003

The following table shows the language versions of the article with the highest Authors’ Interest.

#	Language	AI award	Relative AI
1	English (en) Uncertainty principle		841
2	German (de) Heisenbergsche Unschärferelation		328
3	Italian (it) Principio di indeterminazione di Heisenberg		202
4	French (fr) Principe d'incertitude		201
5	Russian (ru) Принцип неопределённости		143
6	Spanish (es) Relación de indeterminación de Heisenberg		121
7	Japanese (ja) 不確定性原理		106
8	Dutch (nl) Onzekerheidsrelatie van Heisenberg		88
9	Hebrew (he) עקרון האי-ודאות		83
10	Polish (pl) Zasada nieoznaczoności		73

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

#	Language	AI award	Relative AI
1	English (en) Uncertainty principle		4
2	German (de) Heisenbergsche Unschärferelation		3
3	Italian (it) Principio di indeterminazione di Heisenberg		2
4	Arabic (ar) مبدأ الريبة		1
5	Spanish (es) Relación de indeterminación de Heisenberg		1
6	Azerbaijani (az) Qeyri-müəyyənlik prinsipi		0
7	Belarusian (be) Прынцып нявызначанасці Гейзенберга		0
8	Bulgarian (bg) Съотношение на неопределеност на Хайзенберг		0
9	Catalan (ca) Principi d'indeterminació de Heisenberg		0
10	Czech (cs) Princip neurčitosti		0

The following table shows the language versions of the article with the highest number of citations.

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In Simple English Wikipedia the most popular articles on that day were: List of European countries, Black, List of sex positions, 2026 Iran war, Suresh Raina, Politics of Germany, Academy Award for Best Director, 2020, DYSS-TV, 2022.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information