| Year | 1904 |
| Date | 24-Mar |
| Volume | 10 |
| Issue | 152 |
| Page | 278 |
| Category | Electrical |
| Part | |
| Title | The Construction of Model Alternators |
| Author | "Zodiac" |
| Notes | A simple armature, periodicity, wave form, current in a circuit, inductance, lag of current behind the e.m.f., reactance and impedance |