particles of matter that cannot be detected by their radiation in other languages

• English
  

• Albanian
  

• Arabic
  

• Armenian
  

• Asturian
  

• Azeri
  

• Basque
  

• Belarusian
  

• Bulgarian
  

• Catalan
  

• Chinese
  

• Mandarin
  

• Czech
  

• Danish
  

• Dutch
  

• Faroese
  

• Finnish
  

• French
  

• Galician
  

• German
  

• Greek
  

• 
  

• Hungarian
  

• Icelandic
  

• Ido
  

• Indonesian
  

• Irish
  

• Italian
  

• Japanese
  

• Korean
  

• Latvian
  

• Lithuanian
  

• Macedonian
  

• Malay
  

• Norwegian
  

• Persian
  

• Polish
  

• Portuguese
  

• Romanian
  

• Russian
  

• Serbo-Croatian
  

• Cyrillic
  

• Roman
  

• Sicilian
  

• Slovak
  

• Slovene
  

• Spanish
  

• Swedish
  

• Thai
  

• Turkish
  

• Ukrainian
  

• Vietnamese