Willem Einthoven (1860-1927) Dutch physician. Einthoven was born in the Dutch East Indies (now Indonesia). His mother brought the family back to the Netherlands in 1870, four years after the death of Einthoven's father. Einthoven was awarded the 1924 Nobel Prize for Physiology or Medicine for his invention of the electrocardiogram (ECG), which he developed from 1901 onwards. His original machine, which used a string galvanometer, was very heavy and required several people to operate it. Einthoven also originated the P, Q, R, S, T terminology still used to label ECGs. This photograph is from the Bain News Service, one of the USA's earliest news picture libraries. The photographs date from the 1890s to the 1930s.