|
Physical Reference Data |
The Physical Reference Data
page contains links to all of the online databases maintained by the Physics
Laboratory. The databases include data on fundamental physical constants,
atomic and molecular spectroscopy, ionization cross sections, absorption of
x-rays and gamma rays, radiation dosimetry, half-life measurements, atomic
weights, and condensed matter physics. |
 |
|
Constants, Units
and Uncertainty |
The website on Constants, Units and
Uncertainty addresses three topics: fundamental physical constants, the
International System of Units (SI), which is the modern metric system, and
expressing the uncertainty of measurement results. Both essential information
and background information are given for each topic. |
|
|
|
Measurements and
Calibrations |
The Measurements and Calibrations
page provides information on many of the Physics Laboratory's calibration
services and measurement methods in the areas of optical technology, ionizing
and optical radiation, and time and frequency services. |
|
|
|
Publications |
The Publications page provides links to
a searchable bibliography of the Physics Laboratory staff publications and the
most recent Technical Activities report.
- Also included are links to special publications:
- Periodic Table of the Elements
- Optical Radiation Measurement
- Diatomic Calculations: Equations & Theory
- Methane Symmetry Operations
- Polarized Light Scattering Models
- Atomic Spectroscopy
- Bose-Einstein Condensation
- Constants, Units, and Uncertainty
- Timekeeping
|
|
|
|
General Interest |
- The General Interest web page
contains information aimed at a more general audience than most of our products
and services. In particular, there is information on timekeeping, including
- A Walk Through Time
- From Sundials to Atomic Clocks: Understanding Time and Frequency
- NIST Web Clock
- There is information on three exhibits in the NIST Virtual Museum:
- Marie Curie and the NBS Radium Standards
- The Fall of Parity
- The Scanning Tunneling Microscope
Information on the 1997, 2001, and 2005 Nobel Prizes in Physics is also
provided. |
|
Inquiries or comments: Feedback