Spirometer
“A contrivance for measuring the extreme differential capacity of the human lungs. The instrument most commonly employed consists on an inverted chamber submerged in a water bath. The breath is conducted by a flexible pipe and internal tube so as to collect in the chamber, which rises in the water, and is fitted with an index which marks the cubic inches of air expired after a forced inspiration...a, is a small gas-holder containing an inverted vessel a’; b, index which shows on the scale c the number of cubic inches expired; d, manometer, which, when a’ is held down, shows the pressure which the lungs can exert; e, plug-vent for outlet of the expired air; f, cock for outlet of water; g, tube through which the expiration is made.” —Whitney, 1889
Keywords
lung, lungs, breath, breathing, human lungs, breath measurement, breath support, flexible pipe, internal tube, measure breath, spirometer, water bathGalleries
Health CareSource
William Dwight Whitney, PhD, LLD The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1895) 5843
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