Half-life (physics)

Quality:

Half-life - mean duration after which a decaying quantity has reached half of its initial value. Article “Half-life (physics)” in Simple English Wikipedia has 13.6 points for quality (as of July 1, 2025). The article contains 1 references and 3 sections.

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

Achievements in all the time:

Simple English Wikipedia:

sim

The 3635^th most popular in Simple English Wikipedia.

sim

The 6979^th most editable in Simple English Wikipedia.

Global Wikipedia:

The 9336^th most popular in all topics.

Achievements in the last month:

Simple English Wikipedia:

sim

The 4439^th most popular in Simple English Wikipedia in the last month.

Since the creation of article “Half-life (physics)”, its content was written by 29 registered users of Simple English Wikipedia (6979^th place) and edited by 2019 registered Wikipedia users in all languages.

The article is cited 80 times in Simple English Wikipedia and cited 16709 times in all languages (9997^th place).

The highest Authors Interest rank from 2001:

• Local (Simple English): #188 in April 2019
• Global: #378 in December 2001

The highest popularity rank from 2008:

• Local (Simple English): #712 in March 2011
• Global: #710 in March 2011

There are 51 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	Russian (ru) Период полураспада		52.1882
2	Slovak (sk) Polčas premeny		41.8877
3	German (de) Halbwertszeit		40.2708
4	English (en) Half-life		35.9594
5	Czech (cs) Poločas přeměny		35.3999
6	Vietnamese (vi) Chu kỳ bán rã		33.2276
7	Japanese (ja) 半減期		29.7214
8	Tamil (ta) அரைவாழ்வுக் காலம்		26.244
9	Italian (it) Emivita (fisica)		23.3795
10	Greek (el) Χρόνος ημιζωής		22.6124

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

#	Language	Popularity award	Relative popularity
1	English (en) Half-life		12 518 354
2	German (de) Halbwertszeit		3 136 592
3	Japanese (ja) 半減期		1 807 900
4	Russian (ru) Период полураспада		1 566 893
5	Polish (pl) Czas połowicznego rozpadu		1 094 516
6	French (fr) Demi-vie		1 078 928
7	Chinese (zh) 半衰期		647 061
8	Portuguese (pt) Meia-vida		575 316
9	Dutch (nl) Halveringstijd		541 922
10	Italian (it) Emivita (fisica)		504 405

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

#	Language	Popularity award	Relative popularity
1	English (en) Half-life		21 183
2	German (de) Halbwertszeit		4 107
3	Russian (ru) Период полураспада		3 810
4	Japanese (ja) 半減期		3 164
5	French (fr) Demi-vie		2 326
6	Korean (ko) 반감기		2 255
7	Chinese (zh) 半衰期		2 186
8	Polish (pl) Czas połowicznego rozpadu		1 653
9	Italian (it) Emivita (fisica)		1 613
10	Vietnamese (vi) Chu kỳ bán rã		1 490

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

#	Language	AI award	Relative AI
1	English (en) Half-life		478
2	German (de) Halbwertszeit		268
3	French (fr) Demi-vie		118
4	Dutch (nl) Halveringstijd		86
5	Italian (it) Emivita (fisica)		78
6	Russian (ru) Период полураспада		60
7	Danish (da) Halveringstid		55
8	Japanese (ja) 半減期		53
9	Hebrew (he) מחצית חיים		50
10	Chinese (zh) 半衰期		50

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

#	Language	AI award	Relative AI
1	German (de) Halbwertszeit		1
2	Esperanto (eo) Duoniĝa tempo		1
3	Estonian (et) Poolestusaeg		1
4	French (fr) Demi-vie		1
5	Japanese (ja) 半減期		1
6	Korean (ko) 반감기		1
7	Thai (th) ครึ่งชีวิต		1
8	Arabic (ar) عمر النصف		0
9	Azerbaijani (az) Yarımparçalanma periodu		0
10	Belarusian (be) Перыяд паўраспаду		0

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

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In Simple English Wikipedia the most popular articles on that day were: Black, Alba Baptista, List of European countries, XXXTentacion, Golden Edge, SOLID (object-oriented design), Strait of Hormuz, Megan Skiendiel, Manon Bannerman, Chris Evans.

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