Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.

from the GNU version of the Collaborative International Dictionary of English

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

from The Century Dictionary and Cyclopedia

  • n. An instrument for observing the color-figures of liquid films under the action of sonorous vibrations.

Etymologies

Ancient Greek (Wiktionary)

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