In the spring of 2017, the publication of Christian Doppler’s essay “Vom farblicht der Doppelsterne” will be published for the 175th time. The first time, he laid down the foundations of his theory, which would be characterized in modern physics as the Doppler Effect. The well-known Austrian physicist Anton Zeilinger describes the Doppler Effect as a “millennium effect”. When: Mondays. Time: 17:15 – 18:45. Where: Haus der Gesellschaftswissen.