| Subject | English | German |
| opt. | line self-reversal | Selbstumkehr der Spektrallinie |
| anal.chem. | self-reversal | Selbstumkehr (of a spectral line) |
| opt. | self-reversal | Selbstumkehr |
| opt. | self-reversal | Selbstabsorption |
| phys. | self-reversal | Selbstumkehrung (of spectral lines) |
| phys. | self-reversal | Selbstumkehr (of spectral lines) |