Planck Max Foundational Paper Development (1 results)

Hardcover. Condition: Fine. PLANCK, Max. "Ueber irreversible Strahlungsvorgänge," with "Bemerkungen zu einer Abhandlung über Thermodynamik des Hrn. K. Wesendonck," and with "Entropie und Temperatur strahlender Wärme."  Leipzig, Johann Ambrosius Barth, Annalen der Physik, series IV volume 1, in the volume of 792pp (with three plates, two folding). All offered in the complete volume series IV volume I of 792pp, 3 plates (two folding). Newly and beautifully rebound in calf-backed and tipped marbled boards. FINE condition. Lovely copy. $900 [++] The three Planck papers, as follows (all bound in the single volume of the Annalen): "Ueber irreversible Strahlungsvorgänge," pp 69-122; with, "Bemerkungen zu einer Abhandlung über Thermodynamik des Hrn. K. Wesendonck," pp 621-624; and with "Entropie und Temperatur strahlender Wärme," pp 719-737. [++] This (first paper) is the introduction of the Planck constant and reprints the five papers that Planck wrote on this subject from 1897 to 1899. "By invoking the hypothesis of natural radiation" [the idea that energy is not emitted or absorbed continuously, but in discrete packets called quanta, which are proportional to the frequency of the radiation (E = hv, where h is Planck's constant)] "Planck not only succeeded in obtaining a relation between the energy of the resonator and the intensity of radiation for a given wavelength or frequency, but also in defining the entropy of radiation by a proper expression such that the change of the total entropy was always a positive quantity"--Jagdish Mehra, "The Historical Development of the Quantum Theory," New York, Springer, (2001), p. 36 This statement means that by introducing the concept of "quantized" energy, or "natural radiation" as Planck called it, he was able to not only derive a mathematical formula linking the energy of a vibrating atom (resonator) to the intensity of emitted radiation at a specific wavelength, but also successfully defined the entropy of this radiation in a way that always resulted in an increase in total entropy when considering the system as a whole, which is a key principle in thermodynamics.