Sydney Chapman

Sydney Chapman - British mathematician and geophysicist (1888–1970). Article “Sydney Chapman” in Norwegian Wikipedia has 26.9 points for quality (as of July 1, 2025). The article contains 21 references and 2 sections.

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

Since the creation of article “Sydney Chapman”, its content was written by 16 registered users of Norwegian Wikipedia and edited by 374 registered Wikipedia users in all languages.

The article is cited 45 times in Norwegian Wikipedia and cited 2473 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Norwegian): #10675 in February 2013
• Global: #37682 in August 2010

The highest popularity rank from 2008:

• Local (Norwegian): #22257 in February 2025
• Global: #501146 in June 2020

There are 22 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.

#	Language	Quality grade	Quality score
1	Chinese (zh) 西德尼·查普曼		47.7582
2	English (en) Sydney Chapman (mathematician)		43.6224
3	Swedish (sv) Sydney Chapman (matematiker)		34.0133
4	French (fr) Sydney Chapman (1888-1970)		31.6534
5	Catalan (ca) Sydney Chapman		31.513
6	Norwegian (Nynorsk) (nn) Sydney Chapman		30.6313
7	Hungarian (hu) Sydney Chapman		29.7808
8	Slovenian (sl) Sydney Chapman (matematik)		27.7289
9	Romanian (ro) Sydney Chapman (matematician)		27.2377
10	Norwegian (no) Sydney Chapman		26.9432

More...

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

The most popular language versions of the article "Sydney Chapman" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Sydney Chapman (mathematician)		160 145
2	Japanese (ja) シドニー・チャップマン		20 395
3	Spanish (es) Sydney Chapman		19 631
4	German (de) Sydney Chapman		16 598
5	French (fr) Sydney Chapman (1888-1970)		14 900
6	Russian (ru) Чепмен, Сидни		14 583
7	Portuguese (pt) Sydney Chapman		12 210
8	Chinese (zh) 西德尼·查普曼		5 718
9	Italian (it) Sydney Chapman		5 276
10	Slovenian (sl) Sydney Chapman (matematik)		4 424

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

The most popular language versions of the article "Sydney Chapman" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Sydney Chapman (mathematician)		640
2	Chinese (zh) 西德尼·查普曼		95
3	French (fr) Sydney Chapman (1888-1970)		71
4	Japanese (ja) シドニー・チャップマン		65
5	German (de) Sydney Chapman		41
6	Spanish (es) Sydney Chapman		37
7	Russian (ru) Чепмен, Сидни		33
8	Catalan (ca) Sydney Chapman		29
9	Italian (it) Sydney Chapman		26
10	Arabic (ar) سيدني تشابمان (رياضياتي)		19

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

Language versions of the article "Sydney Chapman" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Sydney Chapman (mathematician)		90
2	French (fr) Sydney Chapman (1888-1970)		49
3	German (de) Sydney Chapman		48
4	Japanese (ja) シドニー・チャップマン		25
5	Spanish (es) Sydney Chapman		20
6	Italian (it) Sydney Chapman		18
7	Norwegian (no) Sydney Chapman		16
8	Russian (ru) Чепмен, Сидни		16
9	Chinese (zh) 西德尼·查普曼		16
10	Dutch (nl) Sydney Chapman		14

More...

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

Language versions of the article "Sydney Chapman" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	French (fr) Sydney Chapman (1888-1970)		1
2	Arabic (ar) سيدني تشابمان (رياضياتي)		0
3	Bulgarian (bg) Сидни Чапман		0
4	Catalan (ca) Sydney Chapman		0
5	Danish (da) Sydney Chapman (matematiker)		0
6	German (de) Sydney Chapman		0
7	English (en) Sydney Chapman (mathematician)		0
8	Spanish (es) Sydney Chapman		0
9	Persian (fa) سیدنی چپمن (ریاضیدان)		0
10	Croatian (hr) Sydney Chapman		0

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

Language versions of the article "Sydney Chapman" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	Portuguese (pt) Sydney Chapman		448
2	Slovenian (sl) Sydney Chapman (matematik)		431
3	Italian (it) Sydney Chapman		418
4	Chinese (zh) 西德尼·查普曼		382
5	English (en) Sydney Chapman (mathematician)		215
6	French (fr) Sydney Chapman (1888-1970)		104
7	Arabic (ar) سيدني تشابمان (رياضياتي)		69
8	Persian (fa) سیدنی چپمن (ریاضیدان)		60
9	German (de) Sydney Chapman		55
10	Swedish (sv) Sydney Chapman (matematiker)		54

More...

#	Language	Value
ar	Arabic سيدني تشابمان (رياضياتي)
bg	Bulgarian Сидни Чапман
ca	Catalan Sydney Chapman
da	Danish Sydney Chapman (matematiker)
de	German Sydney Chapman
en	English Sydney Chapman (mathematician)
es	Spanish Sydney Chapman
fa	Persian سیدنی چپمن (ریاضیدان)
fr	French Sydney Chapman (1888-1970)
hr	Croatian Sydney Chapman
hu	Hungarian Sydney Chapman
it	Italian Sydney Chapman
ja	Japanese シドニー・チャップマン
nl	Dutch Sydney Chapman
nn	Norwegian (Nynorsk) Sydney Chapman
no	Norwegian Sydney Chapman
pt	Portuguese Sydney Chapman
ro	Romanian Sydney Chapman (matematician)
ru	Russian Чепмен, Сидни
sl	Slovenian Sydney Chapman (matematik)
sv	Swedish Sydney Chapman (matematiker)
zh	Chinese 西德尼·查普曼

Best Rank

Norwegian: #22257 02.2025

Global: #501146 06.2020

Best Rank

Norwegian: #10675 02.2013

Global: #37682 08.2010

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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