A Rising Image and a Brighter Future: Gettysburg College in Spring 1929

The spring semester of 1929 at Gettysburg College saw a unique combination of ambition and aspiration from many different quarters of the college community. While the college still struggled with antiquated student life and a male-dominated population, the college broke new ground by building its first ever library, winning the conference basketball title, and seeing a new generation of female students gain academic prominence. At the peak of the Roaring Twenties and led by College President Henry Hanson, Gettysburg College was creating for itself a brighter future

From Professor-Student to Collaborators

I had not met Michael Ritterson before he visited the Conservation Lab at Special Collections, where he was having a book mended, but I had certainly heard of him. A former faculty member of the German department, Mr. Ritterson is now a German translator, taking on projects from translating the work of a 17th German woman’s study of butterflies to the poetry of a Berlin leftist written during the 1968 Movement. And, by previous contact in the mail, he had heard of me. So after Mary Wooton showed him the fully repaired book, we were formally introduced and had the opportunity to discuss his translating projects. It was more than an opportunity to chat with an interesting visitor; it was an opportunity to share talents and abilities. [excerpt

Where Have All the Symbols Gone?: A Study of Sufis and Sufi Symbolism in Ottoman Miniature Paintings

Ottoman miniature paintings represent some of the best preserved and documented works of Islamic art still extant. They differ critically from other forms of miniature painting, such as Persian miniature painting, by not representing Sufi symbolism. In the two potential sources of such symbolism, Ottoman Sufism and Persian miniature painters in the Ottoman Empire, appear to have not critically influenced Ottoman miniature painting to produce Sufi symbols, do to political, religious, and cultural factors. Instead, political factors of the Ottoman imperial state and the economics and standards of production in the empire produced an art medium where Ottoman Sufi symbols were not introduced

Global existence, singular solutions, and ill-posedness for the Muskat problem

The Muskat, or Muskat--Leibenzon, problem describes the evolution of the interface between two immiscible fluids in a porous medium or Hele-Shaw cell under applied pressure gradients or fluid injection/extraction. In contrast to the Hele-Shaw problem (the one-phase version of the Muskat problem), there are few nontrivial exact solutions or analytic results for the Muskat problem. For the stable, forward Muskat problem, in which the higher viscosity fluid expands into the lower viscosity fluid, we show global in time existence for initial data that is a small perturbation of a flat interface. The initial data in this result may contain weak (e.g., curvature) singularities. For the unstable, backward problem, in which the higher viscosity fluid contracts, we construct singular solutions that start off with smooth initial data, but develop a point of infinite curvature at finite time

Inviscid analysis of jet injection between two moving streams

An analytical method is developed for determining the flow interaction when a two-dimensional jet is injected between two moving streams. The jet is flowing out of channel and is turned as it enters between the external streams. The local velocity variation resulting from the flow interaction provides a static pressure variation along the jet bounding streamlines that is a priori unknown. Hense, the flow must be obtained by coupling the three flow regions (the jet and the free stream on either side) along the jet boundaries. Both external streams have the same total pressure, which is different from that in the jet. The solution is for the condition that the total pressure in the jet does not differ from the free-stream value by a large amount compared with the free-stream dynamic head. Results are given for the shape of the jet boundaries for various injection configurations