Ueber die Natur des weissen Lichtes.
Berlin: Johann Ambrosius Barth, 1902.
1st Edition. Soft cover. Near Fine. Item #001954
Offprint from: Annalen der Physik, vol. 7, 1902, pp. 390-400. Berlin: Johann Ambrosius Barth. 8vo (223x145 mm). Original printed wrapper (little soiling and chipping, ownership inscription to top corner), internally fresh and unmarked. Presentation copy ("Überreicht vom Verfasser"). ----
FIRST EDITION. Rare early offprint, presentation copy, of Planck's paper on the nature of white light. Planck states, according to the second law of thermodynamics, [that] "the white light also presents a kind of microscopic indeterminacy: 'the white light, with constant intensity, is completely defined by: 1. energy distribution relative to frequency; 2. the statement that, inside a small spectral region, where one can consider uniform the distribution of energy, amplitudes and phases constant of any partial oscillation, obtain values in absolute irregularity'" (C. Garola & A. Rossi, Foundations Of Quantum Mechanics, The: Historical Analysis And Open Questions, World Scientific, 2000, p.90).
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