| Collection | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments |
| Object Name | Fabry-Perot fringe demonstration apparatus |
| Object Number | ABDNP:201172a |
| Brief Description | Custom made wooden box containing specially designed apparatus for illustrating the change in Fabry-Perot fringes as the gap between the flats is changed by a piezo-electric transducer. Designed and made by Dr John Bates and Henry Barber. The base is a substantial steel block, for stability. Identification by Henry Barber. This is a fine example illustrating the trouble that used to be taken to build illustartive apparatus. John Bates designed a long-path ength scanning Fabry-Perot etalon that could work under vacuum or variable amounts of gas. This is also in the collection. |
| Dimensions | height 132 mm, width 225 mm, length 331 mm |
| Materials | wood, metal, glass, felt |
| Condition | very good |
| Completeness | complete |
| Object Production Date | 1978-1979 |