An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
We discuss the connection of high-energy gamma-ray measurements with precision atomic mass determinations. These rather different technologies, properly
Alice V. Ling, Andras Vladar, Bradley N. Damazo, M A. Donmez, Michael T. Postek
This report describes the current design of a system for monitoring the performance of several major subsystems of a scanning electron microscope (SEM). The
The Semi-Annual Listing of North American Quality System Registration Organizations (NAQSRO) provides information on organizations that have informed NIST about
Mars, RC6, Rijndael, Serpent and Twofish were selected as finalists for the Advanced Encryption Standard (AES). To evaluate the finalists' suitability as random
Active content documents offer several benefits to both the users of these documents and their authors. Java applets, JavaScript, and ActiveX provide more
J. Schwarz, Ruimin Liu, David B. Newell, Richard L. Steiner, Edwin R. Williams
The Nist Watt Balance is an interesting and beautiful experiment housed in the nonmagnetic building behind the reactor. The underlying physical principles of
Over the past decade, a class of devices has been developed based upon the phenomenon of single electron tunneling (SET). These devices exploit the quantized
Richard A. Perkins, M L. Ramires, Carlos A. Nieto de Castro
Absolute measurements of the thermal conductivity of a distilled and dried sample of toluene near saturation are reported. The transient hot-wire technique with
Walter W. Jones, Glenn P. Forney, Richard D. Peacock, Paul A. Reneke
CFAST is a zone model capable of predicting the environment in a multi-compartment structure subjected to a fire. It calculates the time evolving distribution
As the initial step in a study of the role of polymer melt viscosity in polymer burning behavior, a simpler, non-burning configuration has been examined