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[33]. Schütz, Gött. Nachr. 1897, p. 110.
[34]. Lienard, L’Eclairage électrique T. 16, 1896, p. 53. Wiechert, Ann. d. Physik, Vol. 4.
[35]. K. Schwarzschild. Gött-Nachr. 1903. H. A. Lorentz, Enzyklopädie der Math. Wissenschaften V. Art 14, p. 199.
- Transcriber’s Notes:
- The book's idiosyncratic spelling, emphasis, punctuation, and symbology especially in mathematical formulas, have been retained.
- Footnotes have been collected at the end of the text, and are linked for ease of reference.