Rudolf Steiner, Lectures on Natural Science
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GA (CW) | Title[1] | GA 320 | Spiritual Scientific Impulses for the Development of Physics, I. First Course in Natural Science: Light, Colour, Sound - Mass, Electricity, Magnetism | GA 321 | Spiritual Scientific Impulses for the Development of Physics, II. Second Course in Natural Science: Heat on the Boundary of Positive and Negative Materiality | GA 322 | Limits of Natural Knowledge | GA 323 | The Relationship of the Various Natural Scientific Fields to Astronomy. Third Natural Science Course: Celestial Science in Relation to Man and the Study of Man | GA 324 | Observation of Nature, Mathematics, Scientific Experiment and the Results of Knowledge from the Point of View of Anthroposophy. | GA 324a | The Fourth Dimension. Mathematics and Reality | GA 325 | Natural Science and the World-Historical Development of Humanity since Antiquity | GA 326 | The Moment of the Origin of Natural Science in World History and its Development Since Then | Agriculture | GA 327 | The Spiritual-Scientific Foundations for the Prosperity of Agriculture. Agricultural Course. |