OPERA

OPERA experiment - Italian neutrino detector (2011–2012). Article “OPERA” in Japanese Wikipedia has 14.5 points for quality (as of July 1, 2026). The article contains 5 references and 5 sections.

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

Since the creation of article “OPERA”, its content was written by 5 registered users of Japanese Wikipedia and edited by 364 registered Wikipedia users in all languages.

The article is cited 9 times in Japanese Wikipedia and cited 289 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #554 in September 2011
• Global: #358 in September 2011

The highest popularity rank from 2008:

• Local (Japanese): #80164 in September 2011
• Global: #12466 in September 2011

There are 21 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	Italian (it) OPERA		37.1868
2	Chinese (zh) OPERA (實驗)		35.6688
3	English (en) OPERA experiment		29.9666
4	German (de) OPERA (Experiment)		29.6279
5	French (fr) OPERA		26.957
6	Russian (ru) OPERA (эксперимент)		26.4365
7	Finnish (fi) OPERA-koe		21.7901
8	Galician (gl) OPERA (experimento)		21.582
9	Arabic (ar) تجربة أوبيرا		20.5126
10	Simple English (simple) OPERA experiment		19.4475

More...

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

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

#	Language	Popularity award	Relative popularity
1	English (en) OPERA experiment		341 005
2	Chinese (zh) OPERA (實驗)		68 147
3	German (de) OPERA (Experiment)		59 134
4	French (fr) OPERA		51 869
5	Italian (it) OPERA		37 087
6	Polish (pl) OPERA (eksperyment)		35 112
7	Japanese (ja) OPERA		35 084
8	Russian (ru) OPERA (эксперимент)		34 234
9	Spanish (es) OPERA (experimento)		33 033
10	Persian (fa) آزمایش اپرا		10 316

More...

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 "OPERA" in June 2026

#	Language	Popularity award	Relative popularity
1	English (en) OPERA experiment		481
2	Chinese (zh) OPERA (實驗)		238
3	French (fr) OPERA		74
4	Italian (it) OPERA		72
5	German (de) OPERA (Experiment)		53
6	Russian (ru) OPERA (эксперимент)		43
7	Spanish (es) OPERA (experimento)		41
8	Japanese (ja) OPERA		34
9	Persian (fa) آزمایش اپرا		25
10	Polish (pl) OPERA (eksperyment)		24

More...

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

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

#	Language	AI award	Relative AI
1	English (en) OPERA experiment		95
2	French (fr) OPERA		55
3	German (de) OPERA (Experiment)		50
4	Italian (it) OPERA		29
5	Russian (ru) OPERA (эксперимент)		18
6	Polish (pl) OPERA (eksperyment)		16
7	Chinese (zh) OPERA (實驗)		15
8	Spanish (es) OPERA (experimento)		12
9	Vietnamese (vi) Thí nghiệm OPERA		12
10	Czech (cs) OPERA (experiment)		9

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 "OPERA" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	German (de) OPERA (Experiment)		1
2	Italian (it) OPERA		1
3	Arabic (ar) تجربة أوبيرا		0
4	Catalan (ca) OPERA		0
5	Czech (cs) OPERA (experiment)		0
6	English (en) OPERA experiment		0
7	Spanish (es) OPERA (experimento)		0
8	Persian (fa) آزمایش اپرا		0
9	Finnish (fi) OPERA-koe		0
10	French (fr) OPERA		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 "OPERA" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) OPERA experiment		123
2	Russian (ru) OPERA (эксперимент)		35
3	French (fr) OPERA		25
4	Arabic (ar) تجربة أوبيرا		18
5	German (de) OPERA (Experiment)		15
6	Italian (it) OPERA		15
7	Japanese (ja) OPERA		9
8	Polish (pl) OPERA (eksperyment)		9
9	Spanish (es) OPERA (experimento)		8
10	Chinese (zh) OPERA (實驗)		8

More...

#	Language	Value
ar	Arabic تجربة أوبيرا
ca	Catalan OPERA
cs	Czech OPERA (experiment)
de	German OPERA (Experiment)
en	English OPERA experiment
es	Spanish OPERA (experimento)
fa	Persian آزمایش اپرا
fi	Finnish OPERA-koe
fr	French OPERA
gl	Galician OPERA (experimento)
hi	Hindi ऑपेरा प्रयोग
hr	Croatian Eksperiment OPERA
it	Italian OPERA
ja	Japanese OPERA
pl	Polish OPERA (eksperyment)
pt	Portuguese OPERA
ru	Russian OPERA (эксперимент)
sh	Serbo-Croatian Eksperiment OPERA
simple	Simple English OPERA experiment
vi	Vietnamese Thí nghiệm OPERA
zh	Chinese OPERA (實驗)

Best Rank

Japanese: #80164 09.2011

Global: #12466 09.2011

Best Rank

Japanese: #554 09.2011

Global: #358 09.2011

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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 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