View source for Geiger counter

==English==
{{wikipedia}}

===Etymology===
Named after {{w|Hans Geiger}} who developed the first such device in 1908 together with {{w|Ernest Rutherford}}.

===Pronunciation===
* {{IPA|en|/ˈɡaɪɡə ˈkaʊntə/|a=RP}}
* {{IPA|en|/ˈɡaɪɡɚ ˈkaʊntɚ/|a=US}}

===Noun===
{{en-noun}}

# A device designed to detect [[radioactivity]] and measure its intensity.
#: {{syn|en|Geiger-Müller counter}}
#* {{quote-book|en|year=1988|author=David Halliday; Robert Resnick|title=Fundamentals of Physics|edition=3rd|page=387
|passage=Figure 27 shows a '''Geiger counter''', used to detect ionizing radiation. The counter consists of a thin central wire, carrying a positive charge, surrounded by a concentric circular conducting cylinder, carrying an equal negative charge.}}
# {{lb|en|by extension|retail}} a feature of an [[RFID]] reader that emits a sound indicating the signal strength of an RFID tag that is being searched for.
#* {{quote-web|en|title=10 Facts About the Geiger Counter Functionality, aka RFID Tag Locator|url=https://www.atlasrfidstore.com/rfid-insider/10-facts-about-the-geiger-counter-functionality-aka-rfid-tag-locator/|work=atlasRFIDstore|format=blog|date=15 July 2021|accessdate=23 August 2024|text=Any '''Geiger Counter''' feature can direct a user towards an RFID tagged item or at least point the user in the right direction, depending on how far away the RFID tag is.}}

====Translations====
{{trans-top|device}}
* Arabic: {{t|ar|عَدَّاد غَايْغَر|m|tr=ʕaddād ḡayḡar}}, {{t|ar|عَدَّاد جَايْجَر|m|tr=ʕaddād gaygar}}
* Catalan: {{t|ca|comptador Geiger|m}}
* Chinese:
*: Mandarin: {{t+|cmn|蓋革計數器|tr=Gàigé jìshùqì}}
* Danish: {{t+|da|geigertæller|c}}
* Finnish: {{t+|fi|geigermittari}}
* French: {{t+|fr|compteur Geiger|m}}
* German: {{t+|de|Geigerzähler|m}}
* Hebrew: {{t|he|מונה גייגר|m|tr=moné gáyger}}
* Hindi: {{t|hi|गाइगर काउन्टर}}
* Hungarian: {{t+|hu|Geiger–Müller-számláló}}
* Italian: {{t|it|contatore Geiger|m}}
* Japanese: {{t|ja|ガイガー計数管|tr=Gaigā-keisūkan|sc=Jpan}}, {{t|ja|ガイガーカウンター|tr=Gaigā kauntā}}
* Korean: {{t|ko|^가이거 계수기}}
* Norwegian:
*: Bokmål: {{t|nb|geigerteller|m}}
*: Nynorsk: {{t|nn|geigerteljar|m}}
* Portuguese: {{t|pt|contador Geiger|m}}
* Romanian: {{t|ro|detector-Geiger}}
* Russian: {{t|ru|счётчик Ге́йгера|m}}
* Spanish: {{t+|es|contador Geiger|m}}
* Swedish: {{t+|sv|geigermätare|c}}
* Tagalog: {{t|tl|pamilang-gayger}}
* Ukrainian: {{t|uk|лічильник Ге́йгера|m}}, {{t|uk|лічильник Ґе́йґера|m}}
* Urdu: {{t-needed|ur}}
{{trans-bottom}}

{{C|en|Radioactivity|Measuring instruments}}
{{cln|en|eponyms}}