His home in the suburb of Grunewald in Berlin was destroyed by fire after an air raid in February 1944. Loosing his home and possessions was bad, but losing his irreplaceable scientific notebooks was a tragedy for him and for science.
Kanyang tahanan sa labas ng lungsod ng Grunewald sa Berlin ay pupuksain sa pamamagitan ng apoy matapos ang isang hangin salakayin sa Pebrero 1944. Loosing kanyang tahanan at Ari-arian ay masama, ngunit hindi maaaring palitan loosing kanyang pang-agham notebooks ay isang trahedya para sa kanya at para sa science.