Observer effect (physics)

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Observer effect (physics)

Quality:

Observer effect - fact that simply observing a situation or phenomenon necessarily changes that phenomenon. Article "Observer effect (physics)" in English Wikipedia has 23.2 points for quality (as of July 1, 2025). The article contains 9 references and 6 sections.

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

Since the creation of article "Observer effect (physics)", its content was written by 138 registered users of English Wikipedia and edited by 300 registered Wikipedia users in all languages.

The article is cited 41 times in English Wikipedia and cited 159 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #18712 in February 2016
  • Global: #68952 in March 2020

The highest popularity rank from 2008:

  • Local (English): #39837 in November 2022
  • Global: #47726 in January 2021

There are 15 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, 2025 (including revision history and pageviews for previous years).

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

Languages with the highest quality

#LanguageQuality gradeQuality score
1Chinese (zh)
观测者效应
24.0836
2Korean (ko)
관측자 효과
23.762
3Russian (ru)
Эффект наблюдателя
23.3287
4English (en)
Observer effect (physics)
23.2336
5Catalan (ca)
Efecte de l'observador (física)
21.4371
6Portuguese (pt)
Efeito do observador
19.208
7Simple English (simple)
Observer effect
17.9354
8Arabic (ar)
تأثير المراقب (الفيزياء)
16.3399
9Galician (gl)
Efecto do observador
14.6731
10Romanian (ro)
Efect de observator
10.9354
More...

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

Most popular in all the time

The most popular language versions of the article "Observer effect (physics)" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Observer effect (physics)
2 659 305
2Russian (ru)
Эффект наблюдателя
637 172
3Japanese (ja)
観察者効果
474 024
4Chinese (zh)
观测者效应
139 094
5Simple English (simple)
Observer effect
126 241
6Polish (pl)
Efekt obserwatora
77 336
7Portuguese (pt)
Efeito do observador
59 102
8Hebrew (he)
אפקט הצופה
56 095
9Persian (fa)
اثر مشاهده‌گر
51 866
10Hungarian (hu)
Megfigyelői hatás
25 313
More...

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

Most popular in June 2025

The most popular language versions of the article "Observer effect (physics)" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Observer effect (physics)
14 407
2Russian (ru)
Эффект наблюдателя
5 032
3Japanese (ja)
観察者効果
1 756
4Chinese (zh)
观测者效应
1 130
5Simple English (simple)
Observer effect
1 048
6Polish (pl)
Efekt obserwatora
400
7Korean (ko)
관측자 효과
321
8Persian (fa)
اثر مشاهده‌گر
277
9Portuguese (pt)
Efeito do observador
212
10Hebrew (he)
אפקט הצופה
184
More...

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

The highest AI

Language versions of the article "Observer effect (physics)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Observer effect (physics)
138
2Hebrew (he)
אפקט הצופה
38
3Russian (ru)
Эффект наблюдателя
25
4Simple English (simple)
Observer effect
19
5Hungarian (hu)
Megfigyelői hatás
18
6Japanese (ja)
観察者効果
17
7Chinese (zh)
观测者效应
10
8Polish (pl)
Efekt obserwatora
7
9Portuguese (pt)
Efeito do observador
7
10Romanian (ro)
Efect de observator
6
More...

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

The highest AI in June 2025

Language versions of the article "Observer effect (physics)" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Russian (ru)
Эффект наблюдателя
1
2Arabic (ar)
تأثير المراقب (الفيزياء)
0
3Catalan (ca)
Efecte de l'observador (física)
0
4English (en)
Observer effect (physics)
0
5Persian (fa)
اثر مشاهده‌گر
0
6Galician (gl)
Efecto do observador
0
7Hebrew (he)
אפקט הצופה
0
8Hungarian (hu)
Megfigyelői hatás
0
9Japanese (ja)
観察者効果
0
10Korean (ko)
관측자 효과
0
More...

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

The highest CI

Language versions of the article "Observer effect (physics)" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Observer effect (physics)
41
2Japanese (ja)
観察者効果
26
3Chinese (zh)
观测者效应
14
4Russian (ru)
Эффект наблюдателя
12
5Simple English (simple)
Observer effect
12
6Hebrew (he)
אפקט הצופה
11
7Portuguese (pt)
Efeito do observador
9
8Romanian (ro)
Efect de observator
9
9Arabic (ar)
تأثير المراقب (الفيزياء)
8
10Persian (fa)
اثر مشاهده‌گر
8
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
تأثير المراقب (الفيزياء)
caCatalan
Efecte de l'observador (física)
enEnglish
Observer effect (physics)
faPersian
اثر مشاهده‌گر
glGalician
Efecto do observador
heHebrew
אפקט הצופה
huHungarian
Megfigyelői hatás
jaJapanese
観察者効果
koKorean
관측자 효과
plPolish
Efekt obserwatora
ptPortuguese
Efeito do observador
roRomanian
Efect de observator
ruRussian
Эффект наблюдателя
simpleSimple English
Observer effect
zhChinese
观测者效应

Popularity rank trends

Best Rank English:
#39837
11.2022
Global:
#47726
01.2021

AI rank trends

Best Rank English:
#18712
02.2016
Global:
#68952
03.2020

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Observer effect from Wikipedia articles about Uncertainty principle, Observer, Observer effect, Constellation and Quantum decoherence. Whereas reading the article about Observer effect people most often go to Wikipedia articles on Double-slit experiment, Schrödingers cat, Observer, Observer effect and Uncertainty principle.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 12 August 2025

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In English Wikipedia the most popular articles on that day were: Weapons (2025 film), Danielle Spencer (American actress), Cristiano Ronaldo, Deaths in 2025, Taylor Swift, Wednesday (TV series), Superman (2025 film), Georgina Rodríguez, Coolie (2025 film), The Fantastic Four: First Steps.

About WikiRank

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 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information