First of all, i appologize if i'm asking too many questions about Gauss (and some will also say "not very interesting questions"); i know i might appear ridiculus - but i really think it's an important goal to map the entire Gaussian contributions to math and science. Now, to my questions.
I'm very interested to learn about Gauss's unpublished fragments on electromagnetism; especially i'm interested in Gauss's "Zur Electrodynamik" (Gauss's werke, volume 5, p. 601 - 630).
- Electric circuits - The first titles in this manuscript record, to my opinion, his discovery of Kirchoff's laws for branched electrical circuits. But in addition, it seems that he studies some interesting configurations for electrical circuits (see p.601-604), which i didn't find comments about in the literature. So if anyone knows something about these schematic figures, please explain. By the way, it seems also that title 2 in this manuscript records his discovery of the "principle of minimum heat" (established by Kirchoff in 1848; it's related to minimum entropy principles), which Dunnington mentions in p.161 of his biography of Gauss.
- electromagnetic telegraph - was Gauss-Weber's telegraph just a combination of already known principles (binary code,...) and components (electrical wires,commutator)? or did they make essential improvements over these components?
- Sympathetic vibrations - Dunnington tells in his biography: "In 1834, he constructed an induction coil, and was enable to recognize the damping of a magnet vibrating in a coil as a result of induced currents; this led him to the construction of a copper damper for his magnetic apparatus, and to the discovery of "sympathetic vibrations"". I didn't find any comment about "Gauss's discovery of sympathetic vibrations" in the whole literature, and i'm curious to learn more of this.
- Mathematical descriptions for induction and electrodynamics - there is much more material in "Zur electrodynamics" according to Dunnington: "Grassmann's law", "Newmann's law of potential". If anybody knows something about these, i'll be glad to hear.
Thanks sincerely for all the efforts.