spectrograph

Meanings

1. 1
   noun

   an instrument that separates radiation, sound, or charged particles into a spectrum and records or maps the resulting distribution

   The mass spectrograph recorded separate traces for neon ions of different masses.

Formed from spectro- + -graph, literally "spectrum recorder." Spectro- comes from Latin spectrum ("appearance, image"), from specere ("to look at"); -graph comes from Greek graphein ("to write, record").

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