| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 3B70.00 | Coupled Resonators | | |
| 3B70.10 | coupled tuning forks | PIRA 200 | Two matched tuning forks are mounted on resonance boxes. Hit one and the other vibrates too. |
| 3B70.10 | resonance in forks | S-115 | Two identical tuning forks on resonance boxes - strike one and the other starts vibrating. |
| 3B70.10 | sympathetic vibrations | S-50 | Two tuning forks on resonance boxes: hit one and the other vibrates too. Several hints on showing this effect. |
| 3B70.20 | coupled speaker/tuning forks | PIRA 200 | Drive a tuning fork on a resonant box with a speaker. |
| 3B70.25 | sympathetic vibrations in forks | 19-4.7 | A horn driver directed at a box coupled to a tuning fork produces sympathetic vibrations which are detected by a crystal pickup and shown on an oscilloscope. |