Technical Report Archive & Image Library (TRAIL) - 32 Matching Results
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- Large Mollier Chart (Foot-Pound-Fahrenheit Units): Properties of Ammonia
- Large mollier chart showing the properties of ammonia.
- Report of the Twenty-Second National Conference on Weights and Measures, 1929
- Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
- Report of the Twenty-First National Conference on Weights and Measures, 1928
- Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
- Compressibilities of gases
- Reproduction of thirteen graphs for computing compressibilities of various gases and for computing the volumes delivered from cylinders containing various gases.
- National Electrical Safety Code, 4th edition
- Fourth edition of the United States Electrical Safety Code.
- Discussion of the National Electrical Safety Code: (to Accompany the Third Edition of the Code), October 31, 1920
- Discussion of the updated rules in the third edition of the National Electrical Safety Code.
- Annual Report of the Director of the Bureau of Standards to the Secretary of Commerce for the Fiscal Year Ended June 30, 1922
- Annual report of the director of the U.S. National Bureau of Standards discussing the staff, facilities, and activities of the agency during the fiscal year 1921-1922.
- Report of the Nineteenth National Conference on Weights and Measures, 1926
- Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
- National Bureau of Standards: Its Functions and Activities
- A report on the functions of the National Bureau of Standards.
- Tables of Thermodynamic Properties of Ammonia
- A report containing tables of thermodynamic properties of ammonia.
- Motor-Vehicle Headlighting
- A report on the necessity of improved motor-vehicle lighting.
- Mollier Chart of Properties of Ammonia, 1923
- Mollier chart of properties of ammonia.
- Strain Lines Developed by Compressive Tests on Structural Members of the Delaware River Bridge at the United States Bureau of Standards for the Delaware River Bridge Joint Commission
- Strain lines illustrations from Delaware River Bridge.
- Operation and Care of Vehicle-Type Batteries
- Manual for operation and care of storage batteries for use in Army depots.
- U.S. Bureau of Standards Annual Report: 1921
- Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year.
- Report of the Twentieth National Conference on Weights and Measures, 1927
- Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
- Safety Rules for the Installation and Maintenance of Electrical Supply and Communication Lines: Comprising Part 2 of the Fourth Edition National Electrical Safety Code
- Report containing information regarding "the construction and maintenance of overhead and underground electrical supply and communication lines" (p. ii).
- Comparison of American, British, and German Standards for Metal Fits
- Report issued by the Bureau of Standards discussing the comparison of American, British, and German metal fit standards. The comparisons between national standards of the three countries are presented and described. This report includes tables, and illustrations.
- Motor-Vehicle Headlighting
- Report issued by the Bureau of Standards discussing the improved illumination of night-time driving with the use of vehicle head-lighting. Methods of construction and adjustment information are presented. This report includes tables, illustrations, and photographs.
- The Ultra-Violet and Visible Transmission of Various Colored Glasses
- Technical paper issued by the Bureau of Standards over studies conducted on transmissions of ultra-violet energy through different colored glasses. As stated in the introduction, "in the present paper are given the transmissions for the visible and ultra-violet of a large number of glasses, mostly colored, which are not used primarily for eye protection, but which are useful for various other purposes" (p. 3). This paper includes illustrations, and photographs.
- Use of Sulphite Cellulose Extract as a Tanning Material
- Report issued by the Bureau of Standards over chemicals used for tanning leather hides. As stated in the introduction: "an investigation was conducted to determine the suitability of sulfite cellulose extracts, derived from the waste liquors discharged from paper pulp mills, for use in tanning hides for the manufacture of leather" (p. 309). This report includes tables, and photographs.
- Radio-Frequency Resistance and Inductance of Coils Used in Broadcast Reception
- Technical paper issued by the Bureau of Standards over radio-frequency resistance in radio reception. As stated in the introduction, "the purpose of this paper is to present data on the radio-frequency resistance and inductance of coils within the range of frequencies used in radiotelephone broadcasting" (p. 651). This paper includes tables, and illustrations.
- Endurance Tests of Tires
- Technical paper issued by the Bureau of Standards over studies conducted on the endurance of tires. 230 tires of 36 different brands were tested during the studies. The results of the studies are presented and discussed. This paper includes tables, and photographs.
- Tests of Large Columns with H-Shaped Sections
- Report issued by the Bureau of Standards over studies conducted on h-shaped columns. Physical and chemical tests were conducted on different types of columns. The results are presented and discussed. This report includes tables, illustrations, and photographs.
- Fire Tests of Building Columns
- Technical paper issued by the Bureau of Mines over studies conducted on fire resistance on building columns. As stated in the introduction, "the purpose of this investigation is to ascertain (1) the ultimate resistance against fire, of protected and unprotected columns as used in the interior of buildings; (2) their resistance against impact and sudden cooling from hose streams when in a highly heated condition" (p. 12). This paper includes tables, illustrations.
- Testing of Fire-Clay Brick with Special Reference to their Use in Coal-Fired Boiler Settings
- Technical paper issued by the Bureau of Standards over studies conducted on fire-clay bricks. The results of the studies are discussed. This paper includes tables, and illustrations.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.