Fundamental Atomic Units
These four fundamental constants form the basis of the atomic units (see above). Therefore, their numerical values in the atomic units are unity by definition.
| Dimension | Name | Symbol/Definition | Value in SI units |
|---|---|---|---|
| mass | electron rest mass | 9.10938291(40)×10−31 kg | |
| charge | elementary charge | 1.602176565(35)×10−19 C | |
| angular momentum | reduced Planck's constant | 1.054571726(47)×10−34 J·s | |
| electric constant | Coulomb force constant | 8.9875517873681×109 kg·m3·s-2·C-2 |
Read more about this topic: Atomic Units
Famous quotes containing the words fundamental, atomic and/or units:
“One of the fundamental reasons why so many doctors become cynical and disillusioned is precisely because, when the abstract idealism has worn thin, they are uncertain about the value of the actual lives of the patients they are treating. This is not because they are callous or personally inhuman: it is because they live in and accept a society which is incapable of knowing what a human life is worth.”
—John Berger (b. 1926)
“The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced—by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.”
—Erich Fromm (1900–1980)
“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)