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[4] Einthoven developed a sensitive form of string galvanomter that allowed photographic recording of the impulses associated with the heartbeat. He was a leader in applying the string galvanometer to physiology and medicine, leading to today's electrocardiography. [5] Einthoven was awarded the 1924 Nobel prize in Physiology or Medicine for his ...
Beginning in 1901, Einthoven completed a series of prototypes of a string galvanometer. This device used a very thin filament of conductive wire passing between very strong electromagnets. When a current passed through the filament, the magnetic field created by the current would cause the string to move. A light shining on the string would ...
In 1897 a French electrical engineer, Clement Ader, invented the "string galvanometer", containing a tensioned string of quartz. In 1903, Einthoven modified Ader's machine, adding electrodes attached to the patients limbs and thorax. In use the string was seen to vibrate in time with the patients heart. The vibrations were recorded ...
In 1901, Einthoven, working in Leiden, the Netherlands, used the string galvanometer: the first practical ECG. [93] This device was much more sensitive than the capillary electrometer Waller used. In 1924, Einthoven was awarded the Nobel Prize in Medicine for his pioneering work in developing the ECG.
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Williams traveled to Holland to study the methods of Willem Einthoven in 1911. [ 2 ] He constructed the first string galvanometer in America, pioneered vectorcardiography , discovered the ventricular vulnerable period, and first determined the 60-Hz current required to produce ventricular fibrillation with body-surface electrodes.
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