Derived Atomic Units
Below are given a few derived units. Some of them have proper names and symbols assigned, as indicated in the table. kB is Boltzmann constant.
| Dimension | Name | Symbol | Expression | Value in SI units | Value in more common units |
|---|---|---|---|---|---|
| length | Bohr radius | 5.2917720859(36)×10−11 m | 0.052918 nm=0.52918 Å | ||
| energy | Hartree energy | 4.35974417(75)×10−18 J | 27.211 eV=627.509 kcal·mol−1 | ||
| time | 2.418884326505(16)×10−17 s | ||||
| velocity | 2.1876912633(73)×106 m·s−1 | ||||
| force | 8.2387225(14)×10−8 N | 82.387 nN=51.421 eV·Å−1 | |||
| temperature | 3.1577464(55)×105 K | ||||
| pressure | 2.9421912(19)×1013 Pa | ||||
| electric field | 5.14220652(11)×1011 V·m−1 | 5.14220652(11) GV·cm−1=51.4220652(11) V·Å−1 |
Read more about this topic: Atomic Units
Famous quotes containing the words derived, atomic and/or units:
“In the case of our main stock of well-worn predicates, I submit that the judgment of projectibility has derived from the habitual projection, rather than the habitual projection from the judgment of projectibility. The reason why only the right predicates happen so luckily to have become well entrenched is just that the well entrenched predicates have thereby become the right ones.”
—Nelson Goodman (b. 1906)
“No atomic physicist has to worry, people will always want to kill other people on a mass scale. Sure, he’s got the fridge full of sausages and spring water.”
—William Burroughs (b. 1914)
“Even in harmonious families there is this double life: the group life, which is the one we can observe in our neighbour’s household, and, underneath, another—secret and passionate and intense—which is the real life that stamps the faces and gives character to the voices of our friends. Always in his mind each member of these social units is escaping, running away, trying to break the net which circumstances and his own affections have woven about him.”
—Willa Cather (1873–1947)