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Description: "Momentarium" is a collection of poems that examines the instability of moments. By engaging with photography, the poems examine the strengths and flaws in representation. Qualified accuracy, in other words representations that exact no absolute authenticity, are paradoxically, most accurate. The original poems attempt to express both empathy an end to empathy, "I mean to give you what you cannot keep: a blue twice as true" and "I mean to give you what I cannot." The competing forces animate a contingent moment, before it becomes the past.
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Date: August 2017
Creator: Zuehlke, Karl
Partner: UNT Libraries

Development and Construction of an Interferometer for Optical Measurements of Density Fields

Description: A method of interference is described in the present report which promises profitable application in aeronautical research. The physical foundation of the method and a simple method of adjustment are briefly discussed. The special technical construction of the instrument is described which guarantees its use also in the case of vibrations of the surrounding space and permits the investigation of unsteady phenomena. It is found that the interference method will make the small differences in density in the flow field around the body even at low speeds. (40 m/sec) optically measurable.
Date: September 1, 1947
Creator: Zobel, Th.
Partner: UNT Libraries Government Documents Department

A New Apparatus for Measuring the Temperature at Machine Parts Rotating at High Speeds

Description: After a brief survey of the available methods for measuring the temperatures of machine parts at high speed, in particular turbine blades and rotors, an apparatus is described which is constructed on the principle of induction. Transmission of the measuring current by sliding contacts therefore is avoided. Up-to-date experiments show that it is possible to give the apparatus a high degree of sensitivity and accuracy. In comparison with sliding contact types, the present apparatus shows the important advantage that it operates for any length of time without wear, and that the contact difficulties, particularly occurring at high sliding speeds,are avoided.
Date: April 1, 1945
Creator: Gnam, E.
Partner: UNT Libraries Government Documents Department

Realismo Magico Digital: An Exploration of Self-Identity

Description: The internal necessity to rediscover myself constantly drives me back to the country where I spent most of my life, Mexico. I was born and raised in the heart of the world's largest metropolis, Mexico City and through the years I have photographed in locations with important significance for Mexican culture as well as for my personal history. I reorganize and reinvent these places, and by staging models there, I construct my personal interpretation of the Mexican way of life involving the world of “manana” (tomorrow) with its “dictadura perfecta” (perfect dictatorship), where opposite and contradictory situations exist side by side. I am particularly interested in the relationship between people and their environ-ment and I use this theme as a means to explore my own identity as a Mexican. One strategy involves juxtaposing cultural signifiers of Mexican culture. My images are an examination and a projection of my ideals, fears, and dreams about my country and myself.
Date: May 2001
Creator: Mateos, Cesar Augusto
Partner: UNT Libraries

Counterfactual Image of Don and Marge 1946

Description: This photograph depicts a couple standing on the sidewalk next to a street. There are buildings in the background and snow along the ground. The couple appears in black and white and the surroundings appear in color. The photographer placed the black and white photograph of the couple taken in 1946 and put it on top of a photograph of the same location taken over 50 years later.
Date: unknown
Creator: O'Connor, Brian Clark
Partner: UNT College of Information

Comparison of Three Multicylinder Icing Meters and Critique of Multicylinder Method

Description: Three multicylinder cloud meters, fundamentally similar but differing in important details, were compared in use at the Mount Washington Observatory. Determinations of liquid water content were found to agree within the limits of the probable error, but the two instruments designed by the National Advisory Committee for Aeronautics indicated larger drop sizes than did the Observatory's instrument, apparently because of spurious ice catch on the rather rough surface of the larger cylinders. Comparisons of drop-size distribution were largely indeterminate., In a critique of the method, the probable error of determination of liquid water content was found to be +/-8 percent; of drop size, +/-6 percent; and of drop-size distribution, about +/-0.7 unit of the modulus of distribution. Of the systematic errors, run-off of unfrozen water is most important, blow-off and erosion seldom being hampering. Revision of collection-efficiency computations for cylinders in clouds with distributed drop sizes was found necessary and also revision of one of the correction-factor graphs heretofore used. The assumption of constant ice density in deriving cylinder size was found to be permissible for cylinders 1 inch or more in diameter.
Date: June 1, 1952
Creator: Howell, Wallace E.
Partner: UNT Libraries Government Documents Department

An Oil-Stream Photomicrographic Aeroscope for Obtaining Cloud Liquid-Water Content and Droplet Size Distributions in Flight

Description: An airborne cloud aeroscope by which droplet size, size distribution, and liquid-water content of clouds can be determined has been developed and tested in flight and in wind tunnels with water sprays. In this aeroscope the cloud droplets are continuously captured in a stream of oil, which Is then photographed by a photomicrographic camera. The droplet size and size distribution can be determined directly from the photographs. With the droplet size distribution known, the liquid-water content of the cloud can be computed from the geometry of the aeroscope, the airspeed, and the oil-flow rate. The aeroscope has the following features: Data are obtained semi-automatically, and permanent data are taken in the form of photographs. A single picture usually contains a sufficient number of droplets to establish the droplet size distribution. Cloud droplets are continuously captured in the stream of oil, but pictures are taken at Intervals. The aeroscope can be operated in icing and non-icing conditions. Because of mixing of oil in the instrument, the droplet-distribution patterns and liquid-water content values from a single picture are exponentially weighted average values over a path length of about 3/4 mile at 150 miles per hour. The liquid-water contents, volume-median diameters, and distribution patterns obtained on test flights and in the Lewis icing tunnel are similar to previously published data.
Date: January 1, 1956
Creator: Hacker, Paul T.
Partner: UNT Libraries Government Documents Department

A Descriptive Catalog of Selected Aerial Photographs of Geologic Features in the United States

Description: From introduction: The U.S. Geological Survey has selected and assembled sets of photographs that illustrate numerous types of geologic features in the United States. This catalog lists these special sets of photographs that are available for purchase and describes the features illustrated. One reduced photograph from each set is shown on the back pages of this catalog to assist the purchaser in his selection.
Date: 1968
Creator: Geological Survey (U.S.)
Partner: UNT Libraries Government Documents Department

[Slingshot John Milligan Unleashing His Milligan Special]

Description: Photograph of Slingshot John Milligan Unleashing His Milligan Special. This photo appears on page 83 of the Life Magazine listed below. John Milligan, a machinist in Detroit, Michigan who was also the “country’s greatest slingshot expert. “He won local fame by shooting the marks out of playing cards, hitting objects in mid air and bagging game in the field.” Joe took John national with his photos documenting his talent and accuracy. To assure accuracy, he has designed his own precision-built aluminum sling, called the Milligan Special. Additional photos and information can be found in the Clark Family Collection. Photos from this series appeared in eight national publications. Here you can find articles in “Life Magazine . February 3, 1961. Pages 80-83. And in a fifteen page pictorial in the book “Photojournalism” by Joe Clark, HBSS. Photo by: Joe Clark, HBSS. Clark PhotoFile: 6335-83
Date: March 22, 1952
Creator: Clark, Joe
Partner: UNT Libraries Special Collections