Faraday cup

Etymology
Named after English scientist (1791–1867), who first theorized ions around 1830.

Noun

 * 1) A conductive metal cup designed to catch charged particles in vacuum.

Translations

 * German: Faraday-Becher, Faraday-Auffänger, Faraday-Detektor, Faraday-Tasse
 * Italian: coppa di Faraday, pozzo di Faraday