 Since the founding of the MPI of Biophysics, one of the directors has also held a chair at Frankfurt's Goethe University.In cooperation with other MPIs (for Biochemistry, Medical Research, and Molecular Physiology) it operates its own at the Swiss Light Source (SLS) in Switzerland, "one of the most modern and powerful "third generation" in Europe" (source), in order to avoid the normally long waiting times for a measurement.The sharply focused and intense synchrotron radiation (X-rays) is intended to enable, among other things, large protein complexes to be better investigated by X-ray structure analysis.