- Periodic Table of the
A periodic table of the elements, displaying NIST critically-evaluated data on
the atomic properties of the elements. Suitable for high-resolution color
printing for desk or wall-chart display.
Optical Radiation Measurement
A National Measurement System for Radiometry, Photometry, and Pyrometry Based
upon Absolute Detectors. The history of electrical substitution radiometers at
NIST is briefly reviewed and the implementation of the latest generation
absolute cryogenic radiometer is discussed. It is proposed that NIST customers
consider adopting the suggestions made in this technical note to simplify and
improve their optical radiation based calibrations.
Diatomic Calculations: Equations &
Procedures are described, in this pedagogical monograph, for making quantum
mechanical calculations of rotational energy levels and rotational line
intensities in diatomic molecules.
Catalog of explicit symmetry operations for the vibrational, rotational and
nuclear spin functions of methane, and the use of these operations in
determining symmetry laels and selection rules.
More publications on
Polarized Light Scattering Models
A C++ object class library (SCATMECH) has been developed to distribute models
for polarized light scattering from surfaces. It is the intent of this library
to allow researchers in the light-scattering community to fully utilize the
models described in several NIST publications.
- Atomic Spectroscopy
This article outlines the main concepts of atomic structure, with some emphasis
on terminology and notation. Atomic radiation is discussed, and updated
tabulations of ionization energies for the neutral atoms and transition
probabilities for persistent lines of selected neutral atoms are included.
- Bose-Einstein Condensation
Special issue (July-August 1996) of the Journal of Research of the National
Institute of Standards and Technology dedicated to reporting recent
developments in Bose-Einstein condensation and related issues such as ultracold
atomic collision physics.
NIST Physics Laboratory Staff Publications
(1991 to present)
- The most recent Technical
Activities report summarizing research projects, measurement method
developments, calibration and testing services, and data evaluation
activities that were carried out in the Physics Laboratory.
Constants, Units, & Uncertainty
- Fundamental physical constants.
Article on CODATA values, and introduction to constants for nonexperts.
- See also: Chart with selected values of the 2002 CODATA Recommended
Values of the Fundamental Physical Constants - SP961 PDF
- International System of Units.
Publications on SI units, usage, history, and legal rulings:
SP811 HTML or
PDF (413 kB)
SP330 HTML Table
of Contents and PDF
Guide to the SI, with a legal focus - (Federal Register) PDF
SP447 HTML Table
of Contents and PDF
uncertainty. Guidelines for expressing uncertainty:
TN1297 HTML or
PDF (136 kB)
- A Walk Through Time:
Descriptive look at the history of timekeeping from ancient to
modern methods, with a brief introduction to NIST Time and Frequency
Sundials to Atomic Clocks: Understanding Time and Frequency
306 pages) This full-length book provides a comprehensive,
easy-to-understand introduction to the field of time and frequency.
of Frequency and Timing.
publications on time and frequency
Inquiries or comments:
Online: June 1994 - Last update: April 2008