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In 1903 which Dutch physiologist developed the first string galvanometer to measure and graphically record the changes of electrical potential caused by contractions of the heart muscle?

In 1903 which Dutch physiologist developed the first string galvanometer to measure and graphically record the changes of electrical potential caused by contractions of the heart muscle? Correct Answer Willem Einthoven

In 1903 Dutch physiologist Willem Einthoven developed the first string galvanometer to measure and graphically record the changes of electrical potential caused by contractions of the heart muscle.

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