Kymograph

Kymograph

A kymograph (which means 'wave writer') is a device that gives a graphical representation of spatial position over time in which a spatial axis represents time. It basically consists of a revolving drum wrapped with a sheet of paper on which a stylus moves back and forth recording perceived changes of phenomena such as motion or pressure. [ [http://www3.uakron.edu/ahap/apparatus/apparatus.phtml?code_id=6&app_id=428 Photo and Description of a 1903 kymograph] ]

It was invented by German physiologist Carl Ludwig in the 1840s and found its first use as a means to intrusively monitor blood pressure, and found several usages in the field of medicine. [ [http://www.psych.utoronto.ca/museum/verticalkym.htm Primary source texts and quotes on kymographs] ] Its primary use evolved to measure phenomena such as changes in muscular contractions or other physiological processes.

Kymographs were also used to measure atmospheric pressure, tuning fork vibrations, and the functioning of steam engines.

References


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  • Kymograph — Ky mo*graph, n. [Gr. ? wave + graph.] (Physiol.) An instrument for measuring, and recording graphically, the pressure of the blood in any of the blood vessels of a living animal; called also {kymographion}. [1913 Webster] …   The Collaborative International Dictionary of English

  • kymograph — [kī′məgraf΄] n. [< Gr kyma, a wave (see CYME) + GRAPH] an apparatus consisting of a rotating drum for recording wavelike motions, variations, or modulations, such as muscular contractions kymographic adj. kymography [kī mäg′rə fē] n …   English World dictionary

  • Kymograph — Blutdruckversuch mit einem Kymographen (1891) Ein Kymograph („Wellenschreiber“) ist ein Gerät zur graphischen Aufzeichnung einer Position über die Zeit. Er besteht aus einer rotierenden Walze mit aufgespanntem (berußtem) Papier, auf dem ein… …   Deutsch Wikipedia

  • Kymograph — kimografas statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas fiziologiniams vyksmams, pvz., kvėpavimui, širdies plakimui, grafiškai registruoti. atitikmenys: angl. kymograph vok. Kymograph, m rus. кимограф, m pranc. kymographe,… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • kymograph — kimografas statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas fiziologiniams vyksmams, pvz., kvėpavimui, širdies plakimui, grafiškai registruoti. atitikmenys: angl. kymograph vok. Kymograph, m rus. кимограф, m pranc. kymographe,… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Kymograph — kimografas statusas T sritis fizika atitikmenys: angl. kymograph vok. Kymograph, m rus. кимограф, m pranc. kymographe, m …   Fizikos terminų žodynas

  • kymograph — kimografas statusas T sritis fizika atitikmenys: angl. kymograph vok. Kymograph, m rus. кимограф, m pranc. kymographe, m …   Fizikos terminų žodynas

  • kymograph — noun Etymology: Greek kyma wave + International Scientific Vocabulary graph more at cyme Date: 1872 a device which graphically records motion or pressure (as of blood) • kymographic adjective • kymography noun …   New Collegiate Dictionary

  • kymograph — kymographic /kuy meuh graf ik/, adj. /kuy meuh graf , grahf /, n. an instrument for measuring and graphically recording variations in fluid pressure, as those of the human pulse. Also, cymograph. [1865 70; KYMO + GRAPH] * * * …   Universalium

  • kymograph — noun A device that gives a graphical representation of a variation in a phenomenon such as blood pressure over time, using a pen on a rotating drum …   Wiktionary

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