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A Concise History of the ECG: Difference between revisions
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'''1901''' Einthoven invents a new galvanometer for producing electrocardiograms using a fine quartz string coated in silver based on ideas by Deprez and d'Arsonval (who used a wire coil). His "string galvanometer" weighs 600 pounds. Einthoven acknowledged the similar system by Ader but later (1909) calculated that his galvanometer was in fact many thousands of times more sensitive. <cite>Einthoven3</cite> | '''1901''' Einthoven invents a new galvanometer for producing electrocardiograms using a fine quartz string coated in silver based on ideas by Deprez and d'Arsonval (who used a wire coil). His "string galvanometer" weighs 600 pounds. Einthoven acknowledged the similar system by Ader but later (1909) calculated that his galvanometer was in fact many thousands of times more sensitive. <cite>Einthoven3</cite> | ||
'''1902''' Einthoven publishes the first electrocardiogram recorded on a string galvanometer. | '''1902''' Einthoven publishes the first electrocardiogram recorded on a string galvanometer. <cite>Einthoven3</cite> | ||
'''1903''' Einthoven discusses commercial production of a string galvanometer with Max Edelmann of Munich and Horace Darwin of Cambridge Scientific Instruments Company of London. | '''1903''' Einthoven discusses commercial production of a string galvanometer with Max Edelmann of Munich and Horace Darwin of Cambridge Scientific Instruments Company of London. | ||