Hartmut Rosa (born August 15, 1965) is a German sociologist and political scientist, most well known for his theory of resonance and temporal sociology of social acceleration. Life. Hartmut Rosa was born in Lörrach. He grew up in Grafenhausen in the Black Forest, where he spoke the local Alemannic dialect and played the organ in the Protestant parish. https://en.wikipedia.org/wiki/Hartmut_Rosa