From AnthroWiki

Physics is the natural science that investigates the fundamental phenomena of the physical world and deals in particular with matter and energy and their interactions in space and time. Classical physics is limited to those areas in which the peculiarities of quantum mechanics and theory of relativity, which characterise modern physics, can be neglected.

Rudolf Steiner made significant contributions to a deeper understanding of the spiritual-scientific background of physics in the so-called Light Course (CW 320) and the Warmth Course (CW 321), which he held for the prospective teachers of the Waldorf school founded in Stuttgart in 1919. Thereby he oriented himself to Goethe's scientific method and the Goetheanism based on it, which rejects the idea of an abstract law behind natural phenomena and instead seeks to be a "rational description of nature."


References to the work of Rudolf Steiner follow Rudolf Steiner's Collected Works (CW or GA), Rudolf Steiner Verlag, Dornach/Switzerland, unless otherwise stated.
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Index to the Complete Works of Rudolf Steiner - Aelzina Books
A complete list by Volume Number and a full list of known English translations you may also find at Rudolf Steiner's Collected Works
Rudolf Steiner Archive - The largest online collection of Rudolf Steiner's books, lectures and articles in English.
Rudolf Steiner Audio - Recorded and Read by Dale Brunsvold - Anthroposophic Press Inc. (USA)
Rudolf Steiner Handbook - Christian Karl's proven standard work for orientation in Rudolf Steiner's Collected Works for free download as PDF.