Revision of the NBS Tables of Spectral-Line Intensities Below 2450 ร… (open access)

Revision of the NBS Tables of Spectral-Line Intensities Below 2450 ร…

From Abstract: "A calibration is applied to the intensity measurements of the 1400 lines below 2450 A in the NBS Tables of Spectral-Line Intensities. Tables of the new values are presented with the lines arranged by elements and by wavelengths."
Date: July 7, 1967
Creator: Corliss, Charles H.
Object Type: Report
System: The UNT Digital Library
Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review (open access)

Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review

From Introduction Purpose and Scope of Report: "This report is one of a series prepared for the Research Information Center and Advisory Service on Information Processing (RICASIP), and intended as a contribution to improved cooperation in the fields of information selection systems development, information retrieval research and mechanized translation."
Date: April 7, 1967
Creator: Stevens, Mary Elizabeth & Little, John L.
Object Type: Report
System: The UNT Digital Library
Spot Diagrams for the Prediction of Lens Performance From Design Data (open access)

Spot Diagrams for the Prediction of Lens Performance From Design Data

From Abstract: "This Monograph presents an outline of the methods used at the National Bureau of Standards to predict the performance of lenses from an analysis of their designs. The technique is based on the use of spot diagrams, which are analogs of star image tests, and makes extensive use of high-speed digital computers."
Date: September 7, 1965
Creator: Stavroudis, Orestes N. & Sutton, Loyd E.
Object Type: Report
System: The UNT Digital Library
On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory (open access)

On the Statistical Theory of Electromagnetic Waves in a Fluctuating Medium (II): Mathematical Basis of the Analogies to Quantum Field Theory

Report discussing the relationship between quantum field theory and the the statistical theory of waves. Basic equations exist in the latter theory which correspond closely to the fundamental equations of the former theory; i.e., to the commutation relations and the Heisenberg equation of motion. A probability density function of waves is introduced here which corresponds to the probability amplitude function in quantum mechanics. The theory of the statistical Green's functions and their relationships to the expectation values of the physical variables is also extensively developed. It is found that there exists a one-to-one correspondence between the formalism of Green's functions presented here and that used in field theory.
Date: December 7, 1964
Creator: Furutsu, K.
Object Type: Report
System: The UNT Digital Library
Refractive Indices and Densities of Aqueous Solutions of Invert Sugar (open access)

Refractive Indices and Densities of Aqueous Solutions of Invert Sugar

Report of the refractive indices and densities of aqueous solutions of invert sugar at temperatures of 15, 20, 25, and 30ยบ C, for concentrations up to about 82 percent of invert sugar (by weight). From the results, equations have been derived which relate the refractive index and percent of invert sugar (weight in air) at each temperature. Other equations relate the absolute density and percent of invert sugar (weight in vacuum) at each temperature. Five-decimal tables giving the refractive indices and densities of invert sugar solutions containing 1 to 85 percent of sugar are given for each percentage of invert sugar at the four temperatures.
Date: June 7, 1963
Creator: Snyder, Carl F. & Hattenburg, Albert T.
Object Type: Report
System: The UNT Digital Library
The Ultra-Violet and Visible Transmission of Eye-Protective Glasses (open access)

The Ultra-Violet and Visible Transmission of Eye-Protective Glasses

Technical paper issued by the Bureau of Standards over studies conducted on the development of protective eye wear. The methods and equipment used are presented and discussed. This paper includes tables, and illustrations.
Date: June 7, 1919
Creator: Gibson, K. S. & McNicholas, H. J.
Object Type: Report
System: The UNT Digital Library
Operation and Care of Vehicle-Type Batteries (open access)

Operation and Care of Vehicle-Type Batteries

Manual for operation and care of storage batteries for use in Army depots.
Date: June 7, 1920
Creator: Vinal, George W.
Object Type: Report
System: The UNT Digital Library

Bending Moment Due to Wind Pressure on Pole Chart 2A

Chart showing bending moment due to wind pressure on poles for various pole heights, circumferences, and loading. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Object Type: Technical Drawing
System: The UNT Digital Library

Ultimate Resisting Moments of Wood Poles Chart 2B

Chart showing the ultimate resisting moments of wood poles based on the circumferences at ground line for different kinds of woods. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Object Type: Technical Drawing
System: The UNT Digital Library

Catenary Chart 3

Chart of catenary curve ordinates: "The curve gives approximate values of sag at all points on the catenary curve expressed in per cent of the center sag. The error is negligible for all spans in which the center sag is less than 10% of the span length." It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Object Type: Technical Drawing
System: The UNT Digital Library

Conductor Loading Nomograph Chart 1B

Chart related to conductor loading showing vertical, transverse and conductor loads in pounds per linear feet of conductor. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Object Type: Technical Drawing
System: The UNT Digital Library

[Charts for Various Aspects of Poles]

Chart 1A-1B. Conductor loading nomograph, Chart 2A. Bending moment due to wind pressure on pole, Chart 2B. Ultimate resisting moments of wood poles, Chart 3. Catenary curve.
Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Object Type: Technical Drawing
System: The UNT Digital Library
The Fundamental Basis for the Standardization of Electrical Instruments and Meters (open access)

The Fundamental Basis for the Standardization of Electrical Instruments and Meters

Description of the standards used by the electrical power industry for the measurement of the electrical quantities.
Date: May 7, 1948
Creator: Silsbee, Francis B.
Object Type: Report
System: The UNT Digital Library