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  Partner: UNT Libraries Government Documents Department
 Country: United States
 Serial/Series Title: Scientific papers (United States. National Bureau of Standards)
 Collection: Technical Report Archive and Image Library
Cooperative Measurements of Radio Fading in 1925
Scientific paper issued by the Bureau of Standards over studies conducted on radio fading. As stated in the abstract, "the series of measurements on fading were devoted to studies of fading effects during the sunset period, effects during the solar eclipse of January 24, the fading variations throughout a 24-hour day, and the effects of high transmitting power on fading" (p. 419). This paper includes tables, maps, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66491/
Coupled Circuits in Which the Secondary has Distributed Inductance and Capacity
Report issued by the Bureau of Standards over studies conducted on coupled circuits. Emphasis was placed on the secondary circuit and its inductance and capacity. The results of the studies are presented and discussed. This report includes illustrations. digital.library.unt.edu/ark:/67531/metadc66526/
Density and Thermal Expansion of Ethyl Alcohol and of its Mixtures with Water
Report issued by the Bureau of Standards over the thermal expansion of ethyl alcohol. As stated in the introduction, "the scope of the present work includes the preparation of pure anhydrous ethyl alcohol, the determination of the density and thermal expansion of this alcohol and its mixtures with water, and the construction from these data of tables for convenient use" (p. 328). This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66532/
Dependence of Magnetic Hysteresis upon Wave Form
Report issued by the Bureau of Standards over studies on magnetic hysteresis and its dependence upon wave form. Methods and equipment used during the studies are presented and discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66523/
The Determination of the Constants of Instrument Transformers
Report issued by the Bureau of Standards over studies on instrument transformers. As stated in the first paragraph, "the principle of the method here described is the same for both current and potential transformers, being an application of the potentiometer method" (p. 281). The methods and equipment studied are presented and discussed. digital.library.unt.edu/ark:/67531/metadc66527/
A Direct-Reading Device for Use in Computing Characteristics of Vacuum Tungsten Lamps (with Computing Chart)
Report issued by the Bureau of Standards over the development of a computing device to be used with vacuum lamps. The methods of development are presented and discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66538/
Effect of Rate of Temperature Change on the Transformations in an Alloy Steel
Scientific paper issued by the Bureau of Standards over studies conducted on the effects of temperature change on alloy steel. The experimental methods used and the results are presented and discussed. This paper includes tables, photographs, and illustrations. digital.library.unt.edu/ark:/67531/metadc66484/
Effective Resistance and Inductance of Iron and Bimetallic Wires
Report issued by the Bureau of Standards over the use of bimetallic wires. The resistance and inductance of the bimetallic wires are studied. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66537/
Efflux of Gases Through Small Orifices
Scientific paper issued by the Bureau of Standards over studies conducted on gas effusion rates. The methods used and the results of the studies are presented and discussed. This paper includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66486/
The Electrical Conductivity of Commercial Copper
Report issued by the Bureau of Standards over the conductivity of copper. Samples of commercial copper were studied, and the results are presented and discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66529/
Equilibrium in the System: Lead Acetate, Lead Oxide, and Water, at 25⁰
Report issued by the Bureau of Standards over studies on basic acetates and their importance as an effective clarifying agent. The analytical procedures and the results of the studies are discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66536/
Formulas, Tables and Curves for Computing the Mutual Inductance of Two Coaxial Circles
Scientific paper issued by the Bureau of Standards over the mutual inductance of two coaxial circles. As stated in the abstract, "a number of examples are given to show the methods of computation by the different formulas, tables, and charts" (p. 541). This paper includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66489/
Measurements on the Thermal Expansion of Fused Silica
Scientific paper issued by the Bureau of Standards over thermal expansion of fused silica. As stated in the abstract, "this paper gives the results of an investigation on the thermal expansion of transparent and nontransparent fused silica for various temperature ranges between -125 and +1,000 degrees Celsius. A detailed description of the apparatus and the methods used in this research and a summary of available data obtained by previous observers on the thermal expansion of fused silica are given" (p. 1). This paper includes tables, photographs, and illustrations. digital.library.unt.edu/ark:/67531/metadc66490/
A Modified Method for the Determination of Relative Wave-Lengths
Report issued by the Bureau of Standards over developments made to the methods for the determination of relative wave-lengths. The methods developed are discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66528/
The Mutual Inductance of Two Circular Coaxial Coils of Rectangular Section
Report issued by the Bureau of Standards over formulas proposed "for calculating the mutual inductance of coaxial coils" (p. 359). The different formulas proposed are presented and discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66517/
A New Determination of the Ratio of the Electromagnetic to the Electrostatic Unit of Electricity [Part 1]
Report issued by the Bureau of Standards over new determinations made in regard to units of electricity. Methods and equipment used are discussed. This report includes tables, illustrations, and photographs. Part 1 includes sections I through VI. digital.library.unt.edu/ark:/67531/metadc66519/
A New Form of Standard Resistance
Report issued by the Bureau of Standards over new developments of electrical resistivity in manganin wire coils. The results of the developments are discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66524/
New Forms of Instruments for Showing the Presence and Amount of Combustible Gas in the Air
Scientific paper issued by the Bureau of Standards over the detection of combustible gases in the air. The design and development of new detection equipment is discussed. This paper includes tables, photographs, and illustrations. digital.library.unt.edu/ark:/67531/metadc66483/
A New Interferential Dilatometer
Scientific paper issued by the Bureau of Mines over development of a dilatometer. The instrument is used in tests of thermal expansion. The methods are presented and discussed. This paper includes an illustration. digital.library.unt.edu/ark:/67531/metadc66487/
On the Establishment of the Thermodynamic Scale of Temperature by Means of the Constant-Pressure Thermometer
Report issued by the Bureau of Standards over two different types of gas thermometry, with its main focus on the constant-pressure thermometer. The thermodynamic scale of temperature is also discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66518/
On the Standard Scale of Temperature in the Interval of 0⁰ to 100⁰ Celsius
Report issued by the Bureau of Standards over the temperature scale from 0 to 100 degrees Celsius. Details on the history and use of the scale are discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66520/
Platinum Resistance Thermometry at High Temperatures
Report issued by the Bureau of Standards over platinum resistance thermometry. The advantages and limitations at high temperatures are discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66525/
Selective Radiation from the Nernst Glower
Report issued by the Bureau of Standards over studies conducted on the radiation emitted from a Nernst filament. Methods and results of the studies are presented and discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66521/
Specific Heat of Copper in the Interval 0⁰ to 50⁰ Celsius with a Note on Vacuum-Jacketed Calorimeters
Report issued by the Bureau of Standards over studies on the specific heat of copper. The methods and equipment used for the studies are discussed. This report includes tables, photographs, and illustrations. digital.library.unt.edu/ark:/67531/metadc66535/
The Steam-Turbine Expansion Line on the Mollier Diagram, and a Short Method of Finding the Reheat Factor
Report issued by the Bureau of Standards over the Mollier diagram. The steam-turbine expansion line on the diagram is discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66531/
A Study of the Current Transformer with Particular Reference to Iron Loss
Report issued by the Bureau of Standards over studies conducted on current transformers. Emphasis is placed on iron loss. The results of the studies are presented and discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66530/
The Testing of Glass Volumetric Apparatus
Report issued by the Bureau of Standards over testing conducted on volumetric glass apparatus. Types of glass apparatus being tested are presented and discussed. The results of the testing are also discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66522/
Theory of Determination of Ultra-Radio Frequencies by Standing Waves on Wires
Scientific paper issued by the Bureau of Standards over ultra-radio frequencies. As stated in the abstract, "this paper furnishes the theoretical background for the method of frequency standardization employing short standing waves on parallel wires" (p. 487). This paper includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66488/
Thermal Expansion of Insulating Materials
Scientific paper issued by the Bureau of Standards over studies on thermal expansion. Expansivity tests are conducted on many different insulating materials. The results of the tests are discussed. This paper includes tables, photographs, and illustrations. digital.library.unt.edu/ark:/67531/metadc66485/