Second sound

en

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Second sound

Quality:

Second sound - quantum mechanical phenomenon in which heat transfer occurs by wave-like motion. Article “Second sound” in English Wikipedia has 41 points for quality (as of July 1, 2025). The article contains 32 references and 9 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.

In June 2025 the article “Second sound” was edited by 3 authors in English Wikipedia and written by 4 authors in all languages.

Since the creation of article “Second sound”, its content was written by 41 registered users of English Wikipedia and edited by 90 registered Wikipedia users in all languages.

The article is cited 19 times in English Wikipedia and cited 59 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #78149 in July 2021
  • Global: #119714 in December 2009

The highest popularity rank from 2008:

  • Local (English): #264487 in February 2024
  • Global: #112293 in April 2013

There are 10 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
1English (en)
Second sound
41.0142
2Malay (ms)
Bunyi kedua
36.4265
3Catalan (ca)
Segon so
33.0359
4Swedish (sv)
Andra ljudvågen
27.5607
5Portuguese (pt)
Segundo som
24.7443
6Japanese (ja)
第二音波
23.0873
7Russian (ru)
Второй звук в жидком гелии
14.639
8German (de)
Zweiter Schall
13.0858
9Spanish (es)
Segundo sonido
2.9629
10Ukrainian (uk)
Другий звук
0.2517
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 "Second sound" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Second sound
218 458
2German (de)
Zweiter Schall
124 712
3Russian (ru)
Второй звук в жидком гелии
30 885
4Spanish (es)
Segundo sonido
9 514
5Japanese (ja)
第二音波
9 262
6Ukrainian (uk)
Другий звук
4 497
7Portuguese (pt)
Segundo som
3 422
8Malay (ms)
Bunyi kedua
1 088
9Swedish (sv)
Andra ljudvågen
1 018
10Catalan (ca)
Segon so
37
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 "Second sound" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Second sound
1 326
2German (de)
Zweiter Schall
135
3Spanish (es)
Segundo sonido
105
4Russian (ru)
Второй звук в жидком гелии
75
5Japanese (ja)
第二音波
66
6Portuguese (pt)
Segundo som
13
7Swedish (sv)
Andra ljudvågen
13
8Ukrainian (uk)
Другий звук
9
9Malay (ms)
Bunyi kedua
8
10Catalan (ca)
Segon so
6
More...

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

The highest AI

Language versions of the article "Second sound" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Second sound
41
2German (de)
Zweiter Schall
18
3Russian (ru)
Второй звук в жидком гелии
8
4Swedish (sv)
Andra ljudvågen
6
5Spanish (es)
Segundo sonido
5
6Ukrainian (uk)
Другий звук
4
7Japanese (ja)
第二音波
3
8Portuguese (pt)
Segundo som
3
9Catalan (ca)
Segon so
1
10Malay (ms)
Bunyi kedua
1
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 "Second sound" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Second sound
3
2Catalan (ca)
Segon so
1
3German (de)
Zweiter Schall
0
4Spanish (es)
Segundo sonido
0
5Japanese (ja)
第二音波
0
6Malay (ms)
Bunyi kedua
0
7Portuguese (pt)
Segundo som
0
8Russian (ru)
Второй звук в жидком гелии
0
9Swedish (sv)
Andra ljudvågen
0
10Ukrainian (uk)
Другий звук
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 "Second sound" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Second sound
19
2German (de)
Zweiter Schall
11
3Russian (ru)
Второй звук в жидком гелии
8
4Ukrainian (uk)
Другий звук
5
5Japanese (ja)
第二音波
4
6Swedish (sv)
Andra ljudvågen
4
7Spanish (es)
Segundo sonido
3
8Malay (ms)
Bunyi kedua
2
9Portuguese (pt)
Segundo som
2
10Catalan (ca)
Segon so
1
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
caCatalan
Segon so
deGerman
Zweiter Schall
enEnglish
Second sound
esSpanish
Segundo sonido
jaJapanese
第二音波
msMalay
Bunyi kedua
ptPortuguese
Segundo som
ruRussian
Второй звук в жидком гелии
svSwedish
Andra ljudvågen
ukUkrainian
Другий звук

Popularity rank trends

Best Rank English:
#264487
02.2024
Global:
#112293
04.2013

AI rank trends

Best Rank English:
#78149
07.2021
Global:
#119714
12.2009

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Second sound from Wikipedia articles about Superfluidity, Rollin film, Relativistic heat conduction, Speed of sound and Zero sound. Whereas reading the article about Second sound people most often go to Wikipedia articles on Rollin film, Zero sound, Umklapp scattering, Lev Landau and Roton.

Cumulative results of quality and popularity of the Wikipedia article

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

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In English Wikipedia the most popular articles on that day were: 98th Academy Awards, Michael B. Jordan, Paul Thomas Anderson, Jessie Buckley, Sinners (2025 film), Amy Madigan, Autumn Durald Arkapaw, Maya Rudolph, Sean Penn, Academy Awards.

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