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Early electrocardiograph recorder, 1900-1930.

Early electrocardiograph recorder, 1900-1930.
3 0 c m
actual image size: 32cm x 22cm


Manufactured by Boulitte. The electrocardiograph detects and records the tiny electrical signals that coordinate the heart's beats, and which can indicate heart disorders. The signals ripple outwards and are picked up by metal sensors stuck to the skin. Willem Einthoven (1860-1927) developed the electrocardiograph during the early 1900s

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© Science Museum / Science & Society Picture Library

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