Willem Einthoven's “thump-free hall” Dirk van Delft discovers in Leiden’s curator archive where exactly Willem van Einthoven built his ‘thump-free’ hall: the room that allowed him to register the electrocardiograms that would earn him a Nobel prize. Guest author • December 10, 2025
A heartbeat from 1881 Einthoven already experimented with detecting the human heartbeat during his study in Utrecht. Mart van Duijn • August 01, 2016
