Free surface

en

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Free surface

Quality:

Free surface - surface of a fluid that is subject to constant perpendicular stress of pressures in equilibrium and zero parallel shear stress; surface not created by the container. Article “Free surface” in English Wikipedia has 36.1 points for quality (as of July 1, 2026). The article contains 22 references and 6 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Since the creation of article “Free surface”, its content was written by 48 registered users of English Wikipedia and edited by 153 registered Wikipedia users in all languages.

The article is cited 99 times in English Wikipedia and cited 308 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #47924 in December 2007
  • Global: #98461 in December 2007

The highest popularity rank from 2008:

  • Local (English): #59842 in September 2014
  • Global: #112623 in September 2014

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, 2026 (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
1English (en)
Free surface
36.0798
2Turkish (tr)
Serbest yüzey
33.5313
3Spanish (es)
Superficie libre
29.8887
4Catalan (ca)
Superfície lliure
29.8629
5Chinese (zh)
自由表面
25.0668
6Persian (fa)
سطح آزاد
24.9957
7Italian (it)
Pelo libero
18.5357
8Finnish (fi)
Vapaa pinta
17.3235
9Russian (ru)
Свободная поверхность
16.7491
10Arabic (ar)
سطح حر
8.5734
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 "Free surface" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Free surface
457 316
2Italian (it)
Pelo libero
95 232
3Polish (pl)
Powierzchnia swobodna
83 152
4Russian (ru)
Свободная поверхность
33 550
5Spanish (es)
Superficie libre
21 953
6Chinese (zh)
自由表面
21 500
7German (de)
Freie Oberfläche (Strömungslehre)
15 229
8Vietnamese (vi)
Mặt thoáng
12 683
9Persian (fa)
سطح آزاد
12 465
10Swedish (sv)
Fri vattenyta
6 885
More...

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

Most popular in June 2026

The most popular language versions of the article "Free surface" in June 2026
#LanguagePopularity awardRelative popularity
1English (en)
Free surface
609
2Italian (it)
Pelo libero
122
3Chinese (zh)
自由表面
55
4Russian (ru)
Свободная поверхность
54
5Polish (pl)
Powierzchnia swobodna
32
6German (de)
Freie Oberfläche (Strömungslehre)
29
7Spanish (es)
Superficie libre
26
8Turkish (tr)
Serbest yüzey
12
9Swedish (sv)
Fri vattenyta
11
10Vietnamese (vi)
Mặt thoáng
11
More...

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

The highest AI

Language versions of the article "Free surface" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Free surface
48
2Italian (it)
Pelo libero
28
3German (de)
Freie Oberfläche (Strömungslehre)
17
4Turkish (tr)
Serbest yüzey
11
5Polish (pl)
Powierzchnia swobodna
10
6Swedish (sv)
Fri vattenyta
10
7Russian (ru)
Свободная поверхность
8
8Spanish (es)
Superficie libre
5
9Vietnamese (vi)
Mặt thoáng
5
10Chinese (zh)
自由表面
5
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 2026

Language versions of the article "Free surface" with the highest AI in June 2026
#LanguageAI awardRelative AI
1Arabic (ar)
سطح حر
1
2Catalan (ca)
Superfície lliure
1
3German (de)
Freie Oberfläche (Strömungslehre)
0
4English (en)
Free surface
0
5Spanish (es)
Superficie libre
0
6Estonian (et)
Vabapind
0
7Persian (fa)
سطح آزاد
0
8Finnish (fi)
Vapaa pinta
0
9Italian (it)
Pelo libero
0
10Polish (pl)
Powierzchnia swobodna
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 "Free surface" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Free surface
99
2Italian (it)
Pelo libero
60
3Persian (fa)
سطح آزاد
47
4German (de)
Freie Oberfläche (Strömungslehre)
21
5Spanish (es)
Superficie libre
12
6Russian (ru)
Свободная поверхность
12
7Estonian (et)
Vabapind
11
8Swedish (sv)
Fri vattenyta
11
9Polish (pl)
Powierzchnia swobodna
9
10Chinese (zh)
自由表面
9
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2026:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2026:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
سطح حر
caCatalan
Superfície lliure
deGerman
Freie Oberfläche (Strömungslehre)
enEnglish
Free surface
esSpanish
Superficie libre
etEstonian
Vabapind
faPersian
سطح آزاد
fiFinnish
Vapaa pinta
itItalian
Pelo libero
plPolish
Powierzchnia swobodna
ruRussian
Свободная поверхность
svSwedish
Fri vattenyta
trTurkish
Serbest yüzey
viVietnamese
Mặt thoáng
zhChinese
自由表面

Popularity rank trends

Best Rank English:
#59842
09.2014
Global:
#112623
09.2014

AI rank trends

Best Rank English:
#47924
12.2007
Global:
#98461
12.2007

Languages comparison

Important global interconnections (July 2025 – June 2026)

Wikipedia readers most often find their way to information on Free surface from Wikipedia articles about Drop, Cave diving, Wind wave, Sea level and Free surface effect. Whereas reading the article about Free surface people most often go to Wikipedia articles on Shear stress, Free surface effect, Body of water, Interface and Slurry.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 1 July 2026

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 English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

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 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