| Year | 1907 |
| Date | 29-Aug |
| Volume | 17 |
| Issue | 331 |
| Page | 207 |
| Category | Electrical |
| Part | |
| Title | Experiments on Electric Oscillations and Waves |
| Author | R.P.Howgrave-Graham |
| Notes | Lamps & vacuum tube glowing, sparks produced by short-circuiting secondary of step-down oscillation transformer, heating of iron nail by hysteresis & eddy currents |