Table of Atomic and Nuclear Constants
| Quantity | Symbol | Value (SI units) | Relative Standard Uncertainty | |
|---|---|---|---|---|
| Bohr radius | 5.291 772 1092(17) × 10−11 m | 3.2 × 10−9 | ||
| classical electron radius | 2.817 940 3267(27) × 10−15 m | 9.7 × 10−10 | ||
| electron mass | 9.109 382 91(40) × 10−31 kg | 4.4 × 10−8 | ||
| Fermi coupling constant | 1.166 364(5) × 10−5 GeV−2 | 4.3 × 10−6 | ||
| fine-structure constant | 7.297 352 5698(24) × 10−3 | 3.2 × 10−10 | ||
| Hartree energy | 4.359 744 34(19) × 10−18 J | 4.4 × 10−8 | ||
| proton mass | 1.672 621 777(74) × 10−27 kg | 4.4 × 10−8 | ||
| quantum of circulation | 3.636 947 5520(24) × 10−4 m² s−1 | 6.5 × 10−10 | ||
| Rydberg constant | 10 973 731.568 539(55) m−1 | 5.0 × 10−12 | ||
| Thomson cross section | 6.652 458 734(13) × 10−29 m² | 1.9 × 10−9 | ||
| weak mixing angle | 0.2223(21) | 9.5 × 10−3 | ||
Read more about this topic: Physical Constant
Famous quotes containing the words table, atomic and/or nuclear:
“Many a time I have seen my mother leap up from the dinner table to engage the swarming flies with an improvised punkah, and heard her rejoice and give humble thanks simultaneously that Baltimore was not the sinkhole that Washington was.”
—H.L. (Henry Lewis)
“It is now time to stop and to ask ourselves the question which my last commanding officer, Admiral Hyman Rickover, asked me and every other young naval officer who serves or has served in an atomic submarine. For our Nation M for all of us M that question is, “Why not the best?””
—Jimmy Carter (James Earl Carter, Jr.)
“We now recognize that abuse and neglect may be as frequent in nuclear families as love, protection, and commitment are in nonnuclear families.”
—David Elkind (20th century)