Presented as Thesis (Ph. D.)--University of Wisconsin--Madison, 1905. / Reprinted from the Philosophical magazine, Series 6, no. 61 (Jan. 1906). Includes bibliographical references.

Inaug.-diss.--Rostock. / Lebenslauf. "Literaturverzeichnis": p. 39-45.

Thesis (M.S.)--University of Wisconsin--Madison, 1962. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 78-80).

Presented as Thesis (Ph. D.)--University of Wisconsin--Madison, 1905. / Reprinted from the Philosophical magazine, Series 6, no. 61 (Jan. 1906). Includes bibliographical references.

Infrared spectra of and H₂O and D₂O trapped in solid argon, krypton and nitrogen have been obtained at 4°K. In addition, spectra have been recorded of D₂O in carbon tetrachloride and ammonia matrices at 77°K, and of a dilute solution of D₂O in carbon tetrachloride at 25°C. Dilution studies involving changing the matrix to water ratio from 50 to 500 have been carried out with D₂O in argon at 4°K. Changes in the spectra of D₂O and H₂O in argon, krypton and nitrogen matrices during warm-up have been observed. The dilution and warm-up studies have made it possible to assign certain peaks to monomer, low polymer and higher polymers. The complex spectra of H₂O and D₂O in argon, krypton and nitrogen at liquid helium temperatures are discussed, and previous simple explanations involving molecular association, rotation and multiple trapping sites advanced by other workers are shown to be inadequate. Consideration is given to the isotope effect and interactions with the matrix in an attempt to account for the observed spectra. / Science, Faculty of / Chemistry, Department of / Graduate

Measurements have been made of the integrated absorption coefficients of the three fundamental vibration-rotation bands of sulfur dioxide vapor. In contrast to previously reported values of these intensities, the molecular dipole moment calculated from them differs widely from the static dipole moment determined by other methods. The magnitudes of the bond moment derivatives are not in agreement with simple molecular models, indicating that infrared intensities are sensitive to the details of the electrical charge redistribution accompanying molecular distortions. The possible role of unshared electrons is discussed. Observations on the shapes, frequencies, bandwidths, and intensities of some absorption bands of sulfur dioxide and carbon disulfide in condensed phases are reported and discussed in terms of the information they may give on intermolecular interactions. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

The infrared absorption spectrum of fluoroform (CHF ₃) has been observed in the region 400 to 5550 cm[superscript -1] with a Perkin-Elmer spectrometer and, in the higher regions, a multiple path absorption cell. The theoretical shapes of a parallel and a perpendicular band have been calculated and have been confirmed by the observed spectrum. The assignments of the fundamental frequencies by Rank, Schull and Pace have been confirmed and the apparent discrepancy in the appearance of the 507.5 cm[superscript -1] band has been explained. The anharmonicity constant x₆₆ has been calculated to be -0.08 cm[superscript -1]. All of the fundamentals except ν₂ have been remeasured to be: ν₁ 3033 cm[superscript -1] ν₃ 700.1 ν₄ 1375 ν₅ 1153 ν₆ 507.5 / Science, Faculty of / Physics and Astronomy, Department of / Graduate

A successful method of dehumidification was designed and used to maintain the relative humidity in a specially constructed room at less than 40% and at a temperature of 20°C. A wavelength drive and control system were designed and built to improve and simplify the operation of a Perkin-Elmer infrared spectrometer and of the recording accessories. The spectrometer was then calibrated and used to examine the infrared absorption spectrum of gaseous carbon disulphide. The wave numbers of six absorption bands of gaseous CS₂ were determined. The wave number value of 1535 cm.ˉ¹ which was determined for the normal frequency √3, was found to agree with a new recently published result and all previously reported bands were observed. No evidence was found which might possibly lead to any interpretation other than that the structure of the carbon disulphide molecule is linear and symmetrical. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

This thesis examines the collision induced, far-infrared absorption of homonuclear diatomic molecules. These molecular processes are relevant in the astrophysical environments of planetary atmospheres and galactic molecular clouds, and a brief survey of far-infrared measurements of these regions is presented. The theory of collision induced absorption by molecular rotational transitions is reviewed and a calculation is made of the quadrupolar induced, single rotational transition absorption line intensities of the nitrogen and oxygen molecules. The far-infrared absorption spectra of liquid nitrogen and liquid oxygen at 77K, over the frequency range 5 to 70 cm⁻¹ , have been measured. The far-infrared spectrum of liquid oxygen has not previously been reported. The present work includes the design of a low temperature, multiple pass, far-infrared absorption cell intended for low temperature, low density gas measurements. The effect of diffraction on the cell's maximum attainable optical path length, and a model used to estimate the anticipated liquid helium consumption are discussed. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

This thesis will explore and study rhodium, a group VIII element that has rarely been studied.