NIST
NIST
These are the constants cited on the U.S. government site for National Institute of Science and Technology (NIST)
NIST Data Items
- alpha particle-electron mass ratio KurtHeckman Use Data Item
- Density Water at STP (SI) MichaelBartmess Use Data Item
- Density Water at STP (US) MichaelBartmess Use Data Item
- Electron Mass TeddyCamelus Use Data Item
- Josephson Constant MichaelBartmess Use Data Item
- lattice spacing of silicon KurtHeckman Use Data Item
- Planck constant over 2 pi (eV*s) MichaelBartmess Use Data Item
- Planck constant over 2 pi *c MichaelBartmess Use Data Item
- Planck constant reduced (over 2 pi) (J*s) DavidC Use Data Item
- Proton Mass TeddyCamelus Use Data Item
- STP (temperature) KurtHeckman Use Data Item
- Surface Tension of Water at STP KurtHeckman Use Data Item
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