Check out Johannes Franz Hartmann's haircuts throughout his career:
Johannes Franz Hartmann had many different haircuts during his career. He was most recognized as an outstanding physicist, astronomer and university teacher. However, the Astronomer was especially known for his unusual fashion sense and his pleasant personality. Before his demise at the age of 71 he was often featured in magazines and tabloids because of his outstanding haircuts. Check out Johannes Franz Hartmann's former haircuts right here: