The Work of Oskar Herzberg-Did Psychosis or the Residence in a Psychiatric Institution Serve as a Catalyst for Creativity?: A Thought-Provoking Impulse to Reconsider the Interrelationship Between Mental Illness and Art.

In the 1920s, the Heidelberg psychiatrist and art historian Hans Prinzhorn collected pictorial works by "mentally ill people"-today's Prinzhorn Collection.His colleague Paul Schilder sent him works by Oskar Herzberg thereto, which Prinzhorn included as "Case 355" in his famous work Bildnerei der Geisteskranken.Using Herzberg as an example, we approached the general issue of the relationship between mental illness, creativity, and art from a historical psychiatric perspective.

Random-phase-shift Fizeau interferometer.

A new and potentially cost efficient kind of vibration-tolerant surface measurement interferometer based on the Fizeau-principle is demonstrated. The crucial novelty of this approach is the combination of two optoelectronic sensors: an image sensor with high spatial resolution and an arrangement of photodiodes with high temporal resolution. The photodiodes continuously measure the random-phase-shifts caused by environmental vibrations in three noncollinear points of the test surface.