phoneidoscope

词形变化

phoneidoscopes 复数 phoneidoscopes

释义与例句

n.
  1. 1.

    An instrument for studying the motions of sounding bodies by optical means. It consists of a tube across whose end is stretched a film of soap solution thin enough to give coloured bands, whose form and position are affected by sonorous vibrations.

词源

From phono- + Ancient Greek εἶδος (eîdos, “sight”) + -scope.

来源：wiktionary