From the Hans Christian Andersen biography "The Life of Hans Christian Andersen. Day By Day", written by DPhil Johan de Mylius:
21 July 1820
H.C. Ørsted discovers electromagnetism. The philosophy of nature and the view on science which is developed in the following years by Ørsted will, through the close relationship which later develops between Ørsted and HCA, be highly significant for HCA.
By chance, HCA has his first - unsuccessful - stage performance as walker-on (in a crowd scene).