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Diffusion Processes with Hidden States from ... - FU Berlin, FB MI

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2 Visual Transduction”The eye owes its existence the light.From indifferent animal auxiliary organsthe light arouses for itself an organ,that shall become its own kind,and so constitutes the eye ajar the light for the light,there<strong>with</strong> the inner light shall counter the outer light.”(Johann Wolfgang Goethe) 1Figure 2.1: Anatomy of the eye. Light is propagating through the lens which focuses the light onthe retina.1 German translation: ”Das Auge hat sein Dasein dem Licht zu danken. Aus gleichgültigen tierischen Hilfsorganenruft sich das Licht ein Organ hervor, das seinesgleichen werde, und so bildet sich das Auge am Lichte fürs Licht,damit das innere Licht dem äusseren entgegentrete” (Johann Wolfgang von Goethe, Goethes NaturwissenschaftlicheSchriften (Kürschner) „Entwurf einer Farbenlehre“, Bd. 3, S. 88).5

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