On 17 October 2024, we celebrated the 100th anniversary of the Poznań Branch of the Polish Physical Society (OP PTF). The ceremony was a great celebration of the physics community from Poznań. This unique event was honoured by the presence of the President of the OP PTF - Prof. Teresa Rząca-Urban and by the speeches of eminent scientists connected with Adam Mickiewicz University in Poznań, Poznań University of Technology, Poznań University of Life Sciences, and the Institute of Molecular Physics of the Polish Academy of Sciences. The event was attended by young physics entrants (PhD students, undergraduates, and members of scientific societies), as well as physics teachers and many schoolchildren. The latter were able to participate in a number of interesting demonstrations prepared by the staff and doctoral students from various research centres, including scientists from the IMP PAS.

We would like to thank Prof. IMP PAS Andrzej Łapiński (the President of the OP PTF) and the entire Organising Committee, headed by Mikołaj Baranowski (the Member of the Council of the OP PTF), for their efforts in organising the event.