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Technical Note (NIST TN)

Fujita Tornado Intensity Scale: A Critique Based on Observations of the Jarrell Tornado of May 27, 1997 (NIST TN 1426)

July 1, 1998

Author(s)

Long T. Phan, Emil Simiu

On May 27, 1997, several tornadoes hit the Central Texas area in the counties of McLennan, Bell, Williamson, and Travis. The most destructive of these tornadoes...

A Portable Calibrator for Across-the-Road Radar Systems

May 1, 1998

Author(s)

Arthur Ondrejka, Robert T. Johnk

Optical Fiber Connectors: An Interlaboratory Comparison of Measurements of Endface Geometry

April 1, 1998

Author(s)

Timothy J. Drapela

An interlaboratory measurement comparison, dealing with geometrical parameters of convex spherically polished optical fiber connector ferrule endfaces, was...

Uncertainties in NIST Noise-Temperature Measurements

March 1, 1998

Author(s)

James P. Randa

Uncertainty analyses are presented for NIST measurements of noise temperature. All systems currently used in NIST calibrations of thermal-noise sources are...

Metering of Fluids at High Velocities with Vortex Shedding Flowmeters

March 1, 1998

Author(s)

James D. Siegwarth

Thermophysical Properties of Helium-4 from 0.8 to 1500 K with Pressures to 2000 MPa

February 19, 1998

Author(s)

V D. Arp, R D. McCarty, Daniel G. Friend

Gases for Electrical Insulation and Arc Interruption: Possible Present and Future Alternatives to Pure SF₆

February 12, 1998

Author(s)

Loucas G. Christophorou, James K. Olthoff, David S. Green

Study of an Underexpanded Annular Wall Jet Past an Axisymmetric Backward-Facing Step

February 11, 1998

Author(s)

Pedro I. Espina, U Piomelli

Time-Domain Calibrations of D-Dot Sensors

February 1, 1998

Author(s)

Robert T. Johnk, Arthur Ondrejka

This Tech Note covers in detail the procedures that are necessary to measure the receive transfer function of a broadband electric-field sensor using direct...

Field Modeling: Simulating the Effects of HVAC Induced Air Flow From Various Diffusers and Returns on Detector Response. International Fire Detection Research Project. Year 4 Report/Data

January 1, 1998

Author(s)

J H. Klote, William D. Davis, Glenn P. Forney, Richard W. Bukowski

Rapid activation of fire protection systems in response to a growing fire is one of the important factors required to provide for life safety and property...

Precision Spectroscopy, Diode Lasers, and Optical Frequency Measurement Technology

January 1, 1998

Author(s)

Leo W. Hollberg, Richard W. Fox, S Waltman, Hugh Robinson

Calibration Service for Laser Power and Energy at 248 nm

January 1, 1998

Author(s)

Rodney W. Leonhardt

This document describes the calibration service provided by the National Institute of Standards and Technology (NIST) for laser power and energy at the excimer...

Selected Thermodynamic Properties for Mixtures of R-32 (Difluoromethane), R-125 (Pentafluoroethane), R-134A (1,1,1,2-Tetrafluoroethane), R-143A (1,1,1-Trifluoroethane), R-41 (Fluoromethane), R-290 (Propane), and R-744 (Carbon Dioxide)

December 1, 1997

Author(s)

C D. Holcomb, Joe W. Magee, Jennifer L. Scott, Stephanie L. Outcalt, William M. Haynes

Gases for Electrical Insulation and Arc Interruption: Possible Present and Future Alternatives to Pure SF₆

November 1, 1997

Author(s)

Loucas G. Christophorou, James K. Olthoff, David S. Green

The electric power industry's preferred gaseous dielectric (besides air), sulfur hexafluoride (SF6) has been shown to be a greenhouse gas. In this report we...

NIST Measurement Assurance Program for Resistance

November 1, 1997

Author(s)

Paul A. Boynton, June E. Sims, Ronald F. Dziuba

The National Institute of Standards and Technology (NIST) offers resistance Measurement Assurance Program (MAP) transfers at the 1 ohm and 10 k ohm levels, to...

Noise-Temperature Measurement System for the WR-28 Band

August 1, 1997

Author(s)

James P. Randa, L. A. Terrell

The NIST Noise Project has constructed and tested a radiometer for the measurement of noise sources in the WR-28 waveguide band (26.5 GHz to 40 GHz). It is a...

Electromagnetic Shielding Characteristics of Optical-Fiber Connectors

April 1, 1997

Author(s)

Keith D. Masterson, David R. Novotny, Galen H. Koepke

Noise Temperature Measurements on Wafer

March 1, 1997

Author(s)

James P. Randa

Measurement Uncertainty of Radiated Emissions

March 1, 1997

Author(s)

David A. Hill, Motohisa Kanda

Intercomparison of Permeability and Permittivity Measurements Using the Transmission/Reflection Method in 7 and 14 mm Coaxial Air Lines

March 1, 1997

Author(s)

Claude Weil, Michael D. Janezic, E. J. Vanzura

Analysis of High Bay Hangar Facilities for Fire Detector Sensitivity and Placement.

February 1, 1997

Author(s)

Daniel L. Lowe, Kathy A. Notarianni, William D. Davis, J E. Gott

Current guidelines for designing fire protection systems for aircraft hangars were developed with the primary objective of saving the building, and with less...

Electric Motor Efficiency Testing Under the New Part 431 of Chapter II of Title 10, Code of Federal Regulations: Enforcement Testing

January 1, 1997

Author(s)

Ken L. Stricklett, M Vangel

Antireflecting-Chromium Linewidth Standard, SRM 473, for Calibration of Optical Microscope Linewidth Measuring System

January 1, 1997

Author(s)

James E. Potzick

This document describes the physical characteristics of Standard Reference Material SRM 473, provides instructions for its use in calibrating optical photomask...