Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A graduated glass tube closed at one end that is used for measuring the change in the volume of gases during a chemical reaction.

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for the volumetric measurement of gases; -- so named because frequently used to determine the purity of the air.

from The Century Dictionary and Cyclopedia

  • n. An instrument originally designed for ascertaining the purity of the air or the quantity of oxygen it contains, but now generally employed in the analysis of gases, for the determination of the nature and proportion of the constituents of any gaseous mixture.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases

Etymologies

Late 18th century, from Greek: eúdio(s) 'clear, fine', from eu 'well' + dios 'heavenly' (Wiktionary)

Examples

  • He also developed numerous other instruments, including the manometer, cyanometer, diaphonometer, anemometer and mountain eudiometer, the first electrometer (1766), a device for measuring electric potential by means of attraction or repulsion of charged bodies, and the first hygrometer, utilizing a human hair to measure humidity (1783).

    De Saussure, Horace Bénédict

  • The eudiometer, a most curious instrument for fixing the purity of air, by measuring the proportion of oxygen, was discovered by

    Continental Monthly , Vol. 6, No. 1, July, 1864 Devoted to Literature and National Policy.

  • N. Teclu has investigated the explosive limits of mixtures of air with certain combustible gases somewhat in the same manner as Eitner, viz.: by firing the mixture in an eudiometer tube by means of an electric spark.

    Acetylene, the Principles of Its Generation and Use

  • The combination of the two gases is brought about in a tube called a eudiometer.

    An Elementary Study of Chemistry

  • ~ A form of eudiometer (Fig. 21) different from that shown on page 43 is sometimes used to avoid the calculations necessary in reducing the volumes of the gases to the same conditions of temperature and pressure in order to make comparisons.

    An Elementary Study of Chemistry

  • A mixture of 50 cc. of carbon monoxide and 50 cc. of oxygen was exploded in a eudiometer, (a) What gases remained in the tube after the explosion?

    An Elementary Study of Chemistry

  • ~ When the quantitative synthesis of water is carried out in the eudiometer as described above, the water vapor formed by the union of the hydrogen and oxygen at once condenses.

    An Elementary Study of Chemistry

  • ~ If the two gases are introduced into the eudiometer in the exact proportions in which they combine, after the combination has taken place the liquid will rise and completely fill the tube.

    An Elementary Study of Chemistry

  • This can be accomplished by surrounding the arm A of the eudiometer

    An Elementary Study of Chemistry

  • A eudiometer tube is filled with mercury and inverted in a vessel of the same liquid.

    An Elementary Study of Chemistry

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