空くう気きシャワー

noun

air shower

Physics term for a cascade of secondary particles produced when a high-energy cosmic ray enters the atmosphere. Also used for a device that blows air to remove dust in cleanrooms.

• 宇う宙ちゅう線せんが大たい気きに入はいると空くう気きシャワーが発はっ生せいする。

  When cosmic rays enter the atmosphere, an air shower occurs.