Universal Physical Constants
From http://physics.nist.gov/constants
Standardized values for universal physical constants are recommended and periodically updated by the Committee on Data for Science and Technology. They include electromagnetic, atomic, physical, chemical, and x-ray related constants, as well as conversion factors. They are related to certain mathematical constants, such as pi and the natural base, e.
The constants listed in these tables were recommended in 2002 and renewed in 2004 by the Committee on Data for Science and Technology (CODATA). They replace the former set, published in 1998. This self-consistent set represents the current, internationally-recognized standard.
| Helix Nebula: | Courtesty NASA/JPL-Caltech/SSC | See original |
| Bubble Chamber: | CERN photo | See original |
| Solar Spectrum: | N.A.Sharp, NOAO/NSO/Kitt Peak FTS/AURA/NSF | See original |
| Volumetric Flask: | Courtesy Dartmouth College | See original |
| Spider Crab X-ray: | Courtesy Robert Hunt | See original |