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Jess M. Ritchie demonstrating AD-X2 before the Senate Select Committee on Small Business
History; Photographs; Metrology; Storage batteries; Additives; 1950s
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Secretary Sinclair Weeks
History; Photographs; Metrology; Storage batteries; Additives; 1950s
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Portrait of California Senator William F. Knowland
History; Photographs; Metrology; Storage batteries; Additives; Portraits
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Portrait of George W. Vinal
History; Photographs; Metrology; Storage batteries; Additives; Portraits
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

AD-X2 Controversy Finding Guide
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Title page from NBS Circular 504
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Instructions on the back of each AD-X2 package
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Six lead-acid batteries used as part of the DC power supply at NBS included in a test of battery additive
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Page from Letter Circular No.302
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Package of AD-X2 with image of Jess M. Ritchie
History; Photographs; Metrology; Storage batteries; Additives
This image is part of the AD-X2 Controversy collection. The National Bureau of Standards (NBS) conducted battery research as early as 1917 as part of the war effort. NBS evaluated hundreds of battery additives that claimed to revive dead batteries....
Historic Images

Oral history interview of Cletus A. Hoer, May 14, 1987 / by Karma Beal
Hoer, Cletus A.
Cletus Hoer reviews his career in the Microwave Metrology Section of NBS in Boulder. He began his work in the Magnetic Materials Group, and then started working with Impedance Standards. His projects included: inductive voltage devices, high...
NBS-NIST Oral Histories

Oral history interview of John Hoffman , May 8, May 23, June 9, and July 21, 2003 / with Hans Oser, Lisa Greenhouse, and Ralph Hudson
Hoffman, John D.
Dr. John Hoffman discusses his long career at NIST. His career spanned the years 1954 to 1982. During that time he was in various leadership positions, including Director of the Institute for Materials Research and Director of the National...
NBS-NIST Oral Histories

The iron-neon hollow-cathode spectrum
Hollow cathode; iron; neon; wavelength standards
Over 4000 wavelengths are listed between 1900 and 9000 for Fe I, Fe II, Ne I and Ne II lines measured in a hollow cathode discharge tube with iron electrodes and a neon gas filling. Photoelectric traces between 2400 and 5700 on a semiquantitative...
Journal of Research of NIST and Predecessor Publications

Pressure Gauge for Naval Ordnance
This is a Pressure Gauge for Naval Ordnance designed by Harvey L. Curtis of the National Bureau of Standards. Applying increased pressure to this device expanded its core elastically, stretched the wire and increased its resistance . This gauge is...
NIST Museum Artifacts

Atlas of the spectrum of a platinum neon hollow-cathode reference lamp in the region 1130-4330 angstrom
hollow-cathode lamp; neon; platinum; spectral atlas; spectrum; wavelength
The spectrum of a platinum hollow-cathode lamp containing neon carrier gas was recorded photographically and photoelectrically with a 10.7 m normal-incidence vacuum spectrograph. Wavelengths and intensities were determined for about 5600 lines in...
Journal of Research of NIST and Predecessor Publications

Spectral transmittance characteristics of holmium oxide in perchloric acid solution
holmium oxide; spectral bandwidth; spectrophotometer calibration; spectral transmittance; wavelength calibration; wavelength standard.
The work describes the methods and procedures used to determine the wavelengths of minimum transmittance of holmium oxide in perchloric acid solution. Measurements of spectral transmittance of the solutions were made by means of a high precision...
Journal of Research of NIST and Predecessor Publications

REPRESENTATIVE SAMPLING OF HUMAN TISSUE
homogeneity of tissue samples; quality control tissue samples; representative tissue samples; tissue analysis; tissue sample size; tissue trace element data base; trace element analysis.
In the chemical analyses of tissues for trace elements, quality control of the tissue sample for its anatomic composition is a critically important step that is frequently overlooked. This is because the analyst often assumes a degree of...
Journal of Research of NIST and Predecessor Publications

Procedures for homogeneous anionic polymerization
Homogeneous anionic polymerization; monodisperse; polystyrene; poly-a-methylstyrene; polyisoprene; polybutadiene
This report is a review of the procedures and equipment used in the preparation of polymers of predictable molecular weights and narrow molecular weight distributions. The monomers considered in detail are styrene, a-methylstyrene, isoprene, and...
Journal of Research of NIST and Predecessor Publications

Procedures for homogeneous anionic polymerization
Homogeneous anionic polymerization; monodisperse; polystyrene; poly-a-methylstyrene; polyisoprene; polybutadiene; United States. National Bureau of Standards--History--Photograph collections.; Polymers research--Photograph collections.; MSED;...
This report is a review of the procedures and equipment used in the preparation of polymers of predictable molecular weights and narrow molecular weight distributions. The monomers considered in detail are styrene, a-methylstyrene, isoprene, and...
MSED Centennial (Special Collection)

Jesse L. Hord
JESSE L. HORD Inducted: 2003 Citation: For research in cryogenic engineering and science, thermophysical properties and processes associated with chemical engineering, and research management as founding director of the Center for Chemical...
NIST Gallery of Distinguished Scientists, Engineers, and Administrators

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