1 gen 1932 anni - Dr Albert Hyman, an American cardiologist invents an artificial pacemaker

Descrizione:

Dr Albert Hyman, an American cardiologist invents an artificial pacemaker with his brother Charles. This was powered by a hand cranked motor, and was tested on laboratory animals. The pacemaker revived 14 out of 43 animals. Hyman did not publish his experiments of artificial pacemakers on humans, and many people thought this device was interfering with nature.

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