MS-015: Frederick H. Kronenberger, Company G, 2nd Regiment New Jersey Volunteers

The bulk of the collection consists of 26 letters written by Kronenberger to his parents, Mr. and Mrs. Charles Kronenberger, and aunts and uncles Hill and Ludwig while posted at Camp Perrine, Trenton, New Jersey, in December 1863, and from a camp near Brandy Station, Virginia between January and April 1864. His letters tell about his need for stamps, hats, shirts, vests, a rubber blanket and ink. He states that he likes hard tack. He writes about visiting friends in other units, receiving letters from family and friends, sending money to his parents, sending photographs of himself and receiving photographs, and newspapers (New York Herald, Sunday Mercury and True Flag). He writes of enjoying baseball games between other units, pitching quoits, and hunting for rabbits and squirrels. Several letters between, Kronenberger\u27s parents and Miss Belle Robison, a nurse/aid at Fredericksburg, discuss the wounds Frederick sustained and his subsequent death, as does a letter from James King, Surgeon General. There is also a letter from a teacher, Anne D. Potts. Miscellaneous items include notes, poems and Charles Kronenberger\u27s 1852 U.S. naturalization certificate. Letters and other material are arranged chronologically. Special Collections and College Archives Finding Aids are discovery tools used to describe and provide access to our holdings. Finding aids include historical and biographical information about each collection in addition to inventories of their content. More information about our collections can be found on our website http://www.gettysburg.edu/special_collections/collections/.https://cupola.gettysburg.edu/findingaidsall/1014/thumbnail.jp

Ultrafast Interference Imaging of Air in Splashing Dynamics

A drop impacting a solid surface with sufficient velocity will emit many small droplets creating a splash. However, splashing is completely suppressed if the surrounding gas pressure is lowered. The mechanism by which the gas affects splashing remains unknown. We use high-speed interference imaging to measure the air beneath all regions of a spreading viscous drop as well as optical absorption to measure the drop thickness. Although an initial air bubble is created on impact, no significant air layer persists until the time a splash is created. This suggests that splashing in our experimentally accessible range of viscosities is initiated at the edge of the drop as it encroaches into the surrounding gas

MS-007: The Papers of Jerry Spinelli, Class of 1963

The Jerry Spinelli collection traces the writing career of the children’s author from 1961- 2003. The papers consist mainly of various versions of manuscripts including his original handwritten manuscripts, several editions of his books and some promotional material. The researcher will not find materials about life at Gettysburg College or Temple University, or his work at Chilton Publishing; genealogical data, diaries, memorabilia or photographs. Special Collections and College Archives Finding Aids are discovery tools used to describe and provide access to our holdings. Finding aids include historical and biographical information about each collection in addition to inventories of their content. More information about our collections can be found on our websitehttp://www.gettysburg.edu/special_collections/collections/.https://cupola.gettysburg.edu/findingaidsall/1006/thumbnail.jp

Fabrication of Pd-Cr wire

Fabrication of Pd-13 percent Cr alloy wires is described. Melting, casting, swaging and annealing processes are discussed. Drawing to reach two diameters (0.003 inch and 0.00176 inch) of wire is described. Representative micrographs of the Pd-Cr alloy at selected stages during wire fabrication are included. The resistance of the wire was somewhat lower, by about 15 to 20 percent, than comparable wire of other alloys used for strain gages

Pool boiling from rotating and stationary spheres in liquid nitrogen

Results are presented for a preliminary experiment involving saturated pool boiling at 1 atm from rotating 2 and 3 in. diameter spheres which were immersed in liquid nitrogen (LN2). Additional results are presented for a stationary, 2 inch diameter sphere, quenched in LN2, which were obtained utilizing a more versatile and complete experimental apparatus that will eventually be used for additional rotating sphere experiments. The speed for the rotational tests was varied from 0 to 10,000 rpm. The stationary experiments parametrically varied pressure and subcooling levels from 0 to 600 psig and from 0 to 50 F, respectively. During the rotational tests, a high speed photographic analysis was undertaken to measure the thickness of the vapor film surrounding the sphere. The average Nusselt number over the cooling period was plotted against the rotational Reynolds number. Stationary sphere results included local boiling heat transfer coefficients at different latitudinal locations, for various pressure and subcooling levels

The Stellar Mass Spectrum in the Young Populous Cluster NGC 1866

The young populous cluster NGC 1866 in the Large Magellanic Cloud LMC), which is probably one of the most massive object formed in the LMC during the last ~ 3 Gyr, appears to have an unexpectedly high mass-to-light ratio. From its velocity dispersion Fischer et al. (1992) find its mass to be (1.35 " 0.25) x 105 Mu. The luminosity of this cluster is MV = -8.93 " 0.13, corresponding to LV = (3.2 " 0.4) x 105 LV (u). This yields M/LV = 0.42 " 0.09 in solar units. For a cluster of age 0.1 Gyr such a relatively high mass-to-light ratio requires a mass spectrum with an exponent x = 1.72 " 0.09; or x = 1.75 " 0.09 if mass loss by evolving stars is taken into account.Comment: To be published in the October 1999 issue of the Publications of the Astronomical Society of the Pacifi

A Baseline Model of Industry Evolution

The paper analyses some general dynamic properties of industries characterized by heterogeneous firms and continuing stochastic entry. After a brief critical assessment of some significant drawbacks of recent contributions to modeling of stochastic industrial dynamics, we propose a novel analytical apparatus able to derive some generic properties of the underlying competition process combining persistent technological heterogeneity, differential growth of individual firms and turnover. The basic model, we suggest, is indeed applicable with proper modifications to a large class of evolutionary processes, well beyond industrial dynamics.Evolution, Competition, Stochastic entry, Industrial dynamics, Evolutionary games