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Titlebook: Jahrbuch der Preu?ischen Forst- und Jagdgesetzgebung und Verwaltung; Dreiundzwanzigster B Bernhard Danckelmann (R?nigl. Preu?. Oberforstmei

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樓主: STRI
51#
發(fā)表于 2025-3-30 10:29:56 | 只看該作者
,Beschaffung des Bedarfs der Forstverwaltung an Kainit, Thomasschlacke und anderen mineralischen Dünhen macht es wünschenswerth, den Bezug dieser Stoffe in preiswürdiger guter Beschaffenheit dadurch zu sichern, sa? die Bestellung bei bew?hrten Lieferanten durchweg von hier aus erfolgt. Zusammenfassung dem Ende wolle die K?nigliche Negierung j?hrlich zum 1. Juni Ihren Bedarf an Dungmitteln der beze
52#
發(fā)表于 2025-3-30 13:00:47 | 只看該作者
53#
發(fā)表于 2025-3-30 18:51:17 | 只看該作者
54#
發(fā)表于 2025-3-31 00:42:13 | 只看該作者
55#
發(fā)表于 2025-3-31 04:15:42 | 只看該作者
R. Wilhelmance at the cathode of a bright green spot, which detaches itself from the cathode and moves towards the anode with a velocity of the order of 10. cm/sec. In [2] we proposed an explanation of this phenomenon and performed some tentative calculations which confirmed the plausibility and self-consiste
56#
發(fā)表于 2025-3-31 05:44:28 | 只看該作者
Bernhard Danckelmann of Fren- kel, Wannier and the Pohl group in the 1930s, a large number of experimental and theoretical studies have been made. Due to these investigations the exciton is now a well-established concept and the electronic structure has been clarified in great detail. The next subjects for investigatio
57#
發(fā)表于 2025-3-31 10:18:02 | 只看該作者
Bernhard Danckelmannly periodic field of a rigid crystal, but the real crystal lattice is deformable and vibrating. The lattice vibrations cause a spatially and temporally fluctuating potential for the exciton. The . fluctuation gives rise to scattering and momentary localization of the exciton, as reflected in the bro
58#
發(fā)表于 2025-3-31 16:20:12 | 只看該作者
59#
發(fā)表于 2025-3-31 21:23:28 | 只看該作者
Bernhard Danckelmann using spectroscopy for further developments. As an example, it would be enough to think of the role of atomic spectroscopy in the development of quantum mechanics. In modern solid-state physics too, spectroscopy has been one of the principal tools to investigate the complicated system of many elect
60#
發(fā)表于 2025-3-31 23:05:21 | 只看該作者
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