Synchrotron radiation: third generation sources

The advent of synchrotron radiation has expanded and revolutionized the use of x-rays as a research tool in a way which could not have been foreseen 40 years ago. In this contribution, we concentrate on the essential elements of third generation synchrotron sources. Their outstanding properties have convinced researchers in 'small' science that it is worth the effort to leave their home laboratories and to perform some of the most demanding, as well as rewarding research at a big centre. The many orders of magnitude gained in brilliance over rotating anode x-ray tubes make all the difference.