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:
“All moral discipline, all moral perfection derived from the soul of literature.”
—Thomas Mann (1875–1955)
“Other centuries had their driving forces. What will ours have been when men look far back to it one day? Maybe it won’t be the American Century, after all. Or the Russian Century or the Atomic Century. Wouldn’t it be wonderful, Phil, if it turned out to be everybody’s century, when people all over the world—free people—found a way to live together? I’d like to be around to see some of that, even the beginning.”
—Moss Hart (1904–1961)
“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)